DARE Electronics, Inc.

United States

Throughout the years, DARE has supported the military, aerospace and ground power industry with custom and unique electro-mechanical relays. Whether for a new application or a retrofit, DARE specializes in meeting the customers needs for special electro-mechanical relays. Working with the customer, DARE can supply an electro-mechanical relay to a customers specific requirement whether they need a special footprint, mounting arrangement, or enclosure, DARE will work with the customer to meet their exact needs. In addition, DARE will work with a customer to supply a fit, form, and functional replacement for an old, obsolete, or discontinued electromechanical relay. These fit, form, and functional relays will fully satisfy the physical, electrical, mechanical, and environmental performance requirements of the original device and allow the military or other user to keep aging aircraft flying and systems operational. Many of the electro-mechanical relays supplied by DARE are designed to meet the stringent requirements of MIL-R-6106 (now MIL-PRF-6106) and MIL-R-5757 and perform under the severe environmental requirements of aerospace or military usage, and several of DAREs electromechanical relays are listed on the Qualified Products List (QPL) for MIL-PRF-6106. These relays include: AN3306-2 and MS25917-1.

Protect aircraft equipment & other devices from damage due to phase loss or reversal with DAREs phase sensors & monitors. Designed to monitor the phase sequence of three phase power, DAREs phase sensors will protect electrical equipment that is sensitive to incorrect phase sequence (rotation), phase loss, or phase reversal. When the phase rotation is correct, the output of DAREs phase sensor will energize. When the phase sensor detects an out-of-phase condition, the output will de-energize. The contacts of the phase sensor can be used to disconnect a load, operate an alarm circuit, or both. In addition, phase sensors can be used in conjunction with a power contactor that will perform the actual switching of the load and can be designed to monitor for over and or under voltage and over and or under frequency conditions. DAREs phase sensors and monitors are highly customizable and available in a wide variety of standard and custom enclosures. Typical electrical specifications include:90 to 150 VAC line to neutral156 to 260 VAC line to line40 to 480 HzVoltage transients per MIL-STD-704 Relay outputs from SPST to 4PDT are available with ratings from dry circuit to 25 amps resistive. Mounting configurations, finishes, and connectors can be custom tailored to meet your requirements and indicating lamps are available if desired.

DAREs frequency sensors and monitors are available in both AC powered and DC powered models in a wide variety of standard or custom enclosures. Used in aircraft, ground support equipment (GSE), ground power applications, and other military and industrial applications, DARE frequency sensors, monitors, and frequency sensing relays will protect equipment that is sensitive to fluctuations in power line frequency from damage due to over and or under frequency conditions. When the power line frequency is within the specified limits, the output of the frequency monitor will energize. When the frequency is over or under or outside the specified frequency range, the output relay of the frequency sensor will de-energize. Among the many various types of frequency sensors, DARE offers:400 Hz fixed and adjustable underfrequency and overfrequency sensors400 Hz fixed and adjustable band pass frequency sensors60 Hz fixed and adjustable underfrequency and overfrequency sensors, and60 Hz fixed and adjustable band point frequency sensors Design features include:Built-In Hysteresis to eliminate chatter due to small frequency changes, andMaximum circuit flexibility to meet your needs In addition, DARE can manufacture frequency sensors, monitors, and frequency sensing relays that do not require supplementary (other than input) power to operate.

DARE Electronics combines advanced state-of-art timing circuits with solid-state or electromechanical outputs to manufacture a complete line of high-reliability time delay relays. This line includes many various precision timing relays commonly referred to as: one-shot timersrepeat cycle timersrecycle time delay relayssolid-state timersinterval timerswatchdog timersmotor driven timersThese time delay relays, available in variety of standard & custom options as illustrated in the above photo and on our time delay relay product datasheet, provide the option of a fixed time-delay or an adjustable time-delay with the time delay on operate (pull-in) andor the time delay on release (drop-out) and normally-open or normally-closed contacts. Models are available with:Time delays ranging from milliseconds to hoursOperating voltages of:18 32 Vdc (28 Vdc nominal) or105 to 125 Vac (115 Vrms nominal) 50Hz, 60 Hz, or 400 HzRelay contact configurations in:SPDT, DPDT, 3PDT, 4PDT, or 6PDT, andRelay contact ratings of:2 amp, 5 amp, 10 amp, or 25 ampsIf you are not sure whether you need a delay on operate (pull-in), a delay on release (drop-out), an interval timer, repeat cycle timer, fixed or adjustable time delay relay, consult our time delay relay operation sheet for more information about each of the various types of time delay relays. For typical specifications and standard enclosures & wiring connections, see our time delay relay product datasheet or contact a sales engineer for assistance with your time delay relay requirements. DAREs sales engineers would be happy to work with you to design a one-shot timer, repeat recycle timer, solid-state, interval or watchdog timer specifically for your application or help you determine which one of the various time delay relay models is right for your application. For example, many customers use a time delay relay with a delay on pull-in (operate) to protect sensitive, critical equipment during system power-up by providing a brief time delay during start-up until the system is fully energized. In addition, a time delay relay may be used for event sequencing or instrumentation control or in an alarm circuit or watchdog circuit. Sometimes two time-delay relays are used in conjunction with each other to provide a pulsing or flashing of a lamp. These two time delay relays can be combined internally into one time delay relay, commonly known as a flasher or repeat cycle timer. Further, while time delay relays have many applications in a variety of industries, DAREs time delay relays are primarily designed to meet the severe environmental requirements of the military and aerospace industry. As such, most DARE time delay relays, repeatre-cycle timers, interval timers, solid-state time delay relays, and watchdog timers are considered mil-spec relays, since they were designed to meet or exceed the requirements of various military specifications, such as MIL-R-83726 (now MIL-PRF-83726), MIL-STD-704, and MIL-STD-810. If your time delay relay needs do not require such stringent military or aerospace specifications and standards, please be sure to let us know, so we can offer the most appropriate time delay relay.

Continuously monitor single or three-phase power lines for over or under voltage conditions with DAREs AC voltage sensors, voltage monitors, and voltage sensing relays. DAREs complete line of AC Voltage Sensors will protect system equipment and circuitry from voltage that is hazardous or unsuitable for operation. Whether in an airborne, ground support, military, or other high reliability application, DARE AC Voltage Sensors can be used to monitor for an under-voltage or over-voltage condition or a voltage window. In the event the voltage sensor detects an undesirable voltage condition, the output of the voltage sensor can be used to activate alarms, shed loads, or shutdown systems. DARE AC Voltage Sensors, Voltage Monitors, and Voltage Sensing Relays are available in:Single or three phase AC voltage sensing models (Delta or Wye)50 Hz, 60 Hz, or 400 Hz operationUnder-voltage, over-voltage, or voltage band modelsLowest phase, highest phase, or three phase averaging In addition, DARE AC Voltage Sensors, Voltage Monitors, and Voltage Sensing Relays can be:Powered from sensing input lines or from separate AC or DC supply And, are available withTime delays on pull-in andor drop-out or with customized voltage-time trip curvesSolid State normally open outputs orRelay outputs in SPDT, DPDT, 3PDT, or 4PDT configurations and contact ratings of 2, 5, 10 or 25 Amps DARE AC Voltage Sensors come in wide variety of finishes, enclosures, connectors, and mounting arrangements and custom configurations are available. The table below describes just some of the various types of voltage sensors available

DARE Electronics solid state relays incorporate advanced microelectronic hybrid technology and are available from low level to 50 amps. Solid state relays have distinct advantages over electro-mechanical devices including: no contact bounce, arcing or flashing; immunity to contact contamination and oxide formation in dry or normally open circuits; and immunity to shock and vibration thus preventing unwanted contact closures. Furthermore, DARE's solid state relays yield much longer switching life, higher reliability, and reduced electromagnetic radiated and conducted emissions. Features include:Optical or transformer input to output isolationZero voltage turn-on; zero current turn-offLogic compatible input current levels3 phase load switching capabilitiesHybrid microelectronic designHigh transient immunityFast switching speedSnap action switching General SpecificationsWhile DAREs solid-state relays are available in a wide variety of custom configurations, these general specifications represent some of DARE's current product capabilities: Solid-State RelaysInput VoltagesFrom 3 to 200 VDC or 3 to 440 VAC Temperature Limits-55C to 110C (Optical)-55C to 125C (Transformer) Load VoltagesUp to 500 Volts AC or DC Input to Output IsolationUp to 4000 VRMS Load CurrentsFrom low level to 50 amperes Available Outputs(AC) Triac or inverse-parallel SCR's, 1 or 3 phase(DC) SCR, MOSFET, Darlington or bipolar transistor

DARE Electronics designs and manufactures flashers to MIL-F-26301 and other flashers with solid-state or electro-mechanical outputs. Used on military, airborne, or ground support applications, DARE flashers and recycle timers can periodically turn on and off navigation, position, warning or indicating light or sense and indicate a malfunction in certain systems and activate an alarm. FA-18 Aircraft Navigation Light FlasherHermetically sealed and encapsulated for immunity to shock, vibration and environmental extremes, DARE flashers are designed and constructed to insure conformity with applicable military specifications, including:Temperature, vibration, shock, acceleration, and altitude per MIL-STD-810Voltage Transients per MIL-STD-704, andEMI per MIL-STD-461 Design features and option include:28 VDC or 115 VAC 50 Hz, 60 Hz, or 400 Hz operationSingle or multiple independent output channelsSolid state or SPDT, DPDT, 3PDT, or 4PDT electromechanical outputs Available in a wide variety of finishes, enclosures, connectors, and mounting arrangement, DARE flashers and recycle timers can be powered from sensing input lines or from separate AC or DC supply and supplied in inductive & lamp load models. In addition, DARE can supply flashers and recycle timers that can be used as direct replacements for thermal or motor driven timers.

Current sensors are designed to monitor the presence or absence of AC or DC current and are available in an assortment of standard & custom models with hermetic or gasket seal models designed to withstand severe environmental conditions. Using internal electronic circuits to detect, monitor or sense AC or DC current, DARE current sensors and monitors can open or close a circuit when a certain pre-set over or under current condition exists or the current falls outside the specified current range. Typical AC & DC current sensor specifications and ratings include:115220440 VAC122848 VDC0 10 Amperes with higher current limits available with the use of an external current transformer Output contacts are available with ratings of:2 amp, 5 amp, 10 amp, or 25 amps SPDT through 4PDT Output contacts can be set to trip for:Under current, over current, or over under (band pass) condition In addition, DARE AC and DC Current Sensors can be:Powered from sensed input lines or from auxiliary AC or DC power

DARE has a complete line of AC or DC operated power monitors available in numerous package styles including 50 Hz, 60 Hz, and 400 Hz models. In addition, DARE has a series of external aircraft power monitors that continuously monitor the quality of electrical power in aircraft electrical systems, ground power equipment, auxiliary power units (APUs), and other equipment for pre-determined over under voltage conditions, over under frequency conditions, loss of phase, improper phase sequence or phase rotation. AC DC Power MonitorsAvailable in Single or Three (3) Phase (Wye or Delta) models, DARE AC or DC operated power monitors can be customized or provided in one of DAREs standard enclosure styles with a variety of optional mounting arrangements, connectors, and finishes. Learn more about AC DC Power Monitors. External Aircraft Power MonitorsDesigned to meet the requirements of MIL-STD-704 for aircraft and missile applications and MIL-E-24021F (now MIL-PRF-24021), DAREs external aircraft power monitors will meet or exceed the severe environmental requirements of MIL-STD-810.

DC voltage sensors monitor input voltages ranging from 3 to 500 volts DC with a trip point accuracy of up to 1% in airborne, military and ground power applications. Using internal electronic circuits to detect, monitor andor sense DC voltage, DARE DC voltage sensors, monitors, and voltage sensing relays can open or close a circuit when a certain pre-set over or under voltage condition exists or the DC voltage falls outside the specified voltage band window. The most common DC voltage sensors are designed to monitor 28 VDC and voltage transients per MIL-STD-704, but DAREs DC voltage sensors can be highly customized for a given application. D.C. Voltage SensorDARE DC Voltage Sensors, Voltage Monitors, and Voltage Sensing Relays are available in:Under-voltage, over-voltage, or voltage band modelsHermetic or gasket seal models designed for demanding environmental conditions In addition, DARE DC Voltage Sensors, Voltage Monitors, and Voltage Sensing Relays can be:Powered from sensing input lines or from separate AC or DC supply DC Current SensorAnd, are available withTime delays on pull-in andor drop-out or with customized voltage-time trip curvesSolid State normally open outputs orRelay outputs in SPDT, DPDT, 3PDT, or 4PDT configurations and contact ratings of 2, 5, 10 or 25 Amps DARE DC Voltage Sensors come in wide variety of finishes, enclosures, connectors, and mounting arrangements and custom configurations are available. The table below describes just some of the various types of voltage sensors available.

DARE Electronics designs and manufactures flashers to MIL-F-26301 and other flashers with solid-state or electro-mechanical outputs. Used on military, airborne, or ground support applications, DARE flashers and recycle timers can periodically turn on and off navigation, position, warning or indicating light or sense and indicate a malfunction in certain systems and activate an alarm. FA-18 Aircraft Navigation Light FlasherHermetically sealed and encapsulated for immunity to shock, vibration and environmental extremes, DARE flashers are designed and constructed to insure conformity with applicable military specifications, including:Temperature, vibration, shock, acceleration, and altitude per MIL-STD-810Voltage Transients per MIL-STD-704, andEMI per MIL-STD-461 Design features and option include:28 VDC or 115 VAC 50 Hz, 60 Hz, or 400 Hz operationSingle or multiple independent output channelsSolid state or SPDT, DPDT, 3PDT, or 4PDT electromechanical outputs Available in a wide variety of finishes, enclosures, connectors, and mounting arrangement, DARE flashers and recycle timers can be powered from sensing input lines or from separate AC or DC supply and supplied in inductive & lamp load models. In addition, DARE can supply flashers and recycle timers that can be used as direct replacements for thermal or motor driven timers.

Protect aircraft equipment & other devices from damage due to phase loss or reversal with DAREs phase sensors & monitors. Designed to monitor the phase sequence of three phase power, DAREs phase sensors will protect electrical equipment that is sensitive to incorrect phase sequence (rotation), phase loss, or phase reversal. When the phase rotation is correct, the output of DAREs phase sensor will energize. When the phase sensor detects an out-of-phase condition, the output will de-energize. The contacts of the phase sensor can be used to disconnect a load, operate an alarm circuit, or both. In addition, phase sensors can be used in conjunction with a power contactor that will perform the actual switching of the load and can be designed to monitor for over and or under voltage and over and or under frequency conditions. DAREs phase sensors and monitors are highly customizable and available in a wide variety of standard and custom enclosures. Typical electrical specifications include:90 to 150 VAC line to neutral156 to 260 VAC line to line40 to 480 HzVoltage transients per MIL-STD-704 Relay outputs from SPST to 4PDT are available with ratings from dry circuit to 25 amps resistive. Mounting configurations, finishes, and connectors can be custom tailored to meet your requirements and indicating lamps are available if desired.

DAREs frequency sensors and monitors are available in both AC powered and DC powered models in a wide variety of standard or custom enclosures. Used in aircraft, ground support equipment (GSE), ground power applications, and other military and industrial applications, DARE frequency sensors, monitors, and frequency sensing relays will protect equipment that is sensitive to fluctuations in power line frequency from damage due to over and or under frequency conditions. When the power line frequency is within the specified limits, the output of the frequency monitor will energize. When the frequency is over or under or outside the specified frequency range, the output relay of the frequency sensor will de-energize. Among the many various types of frequency sensors, DARE offers:400 Hz fixed and adjustable underfrequency and overfrequency sensors400 Hz fixed and adjustable band pass frequency sensors60 Hz fixed and adjustable underfrequency and overfrequency sensors, and60 Hz fixed and adjustable band point frequency sensors Design features include:Built-In Hysteresis to eliminate chatter due to small frequency changes, andMaximum circuit flexibility to meet your needs In addition, DARE can manufacture frequency sensors, monitors, and frequency sensing relays that do not require supplementary (other than input) power to operate.

Current sensors are designed to monitor the presence or absence of AC or DC current and are available in an assortment of standard & custom models with hermetic or gasket seal models designed to withstand severe environmental conditions. Using internal electronic circuits to detect, monitor or sense AC or DC current, DARE current sensors and monitors can open or close a circuit when a certain pre-set over or under current condition exists or the current falls outside the specified current range. Typical AC & DC current sensor specifications and ratings include:115220440 VAC122848 VDC0 10 Amperes with higher current limits available with the use of an external current transformer Output contacts are available with ratings of:2 amp, 5 amp, 10 amp, or 25 amps SPDT through 4PDT Output contacts can be set to trip for:Under current, over current, or over under (band pass) condition In addition, DARE AC and DC Current Sensors can be:Powered from sensed input lines or from auxiliary AC or DC power

DARE has a complete line of AC or DC operated power monitors available in numerous package styles including 50 Hz, 60 Hz, and 400 Hz models. In addition, DARE has a series of external aircraft power monitors that continuously monitor the quality of electrical power in aircraft electrical systems, ground power equipment, auxiliary power units (APUs), and other equipment for pre-determined over under voltage conditions, over under frequency conditions, loss of phase, improper phase sequence or phase rotation. AC DC Power MonitorsAvailable in Single or Three (3) Phase (Wye or Delta) models, DARE AC or DC operated power monitors can be customized or provided in one of DAREs standard enclosure styles with a variety of optional mounting arrangements, connectors, and finishes. Learn more about AC DC Power Monitors. External Aircraft Power MonitorsDesigned to meet the requirements of MIL-STD-704 for aircraft and missile applications and MIL-E-24021F (now MIL-PRF-24021), DAREs external aircraft power monitors will meet or exceed the severe environmental requirements of MIL-STD-810.