- Spark Gaps
- Gas Sensors
- Jennings Relays
- Vacuum Contactors
- DC Contactors
- Power Electronics
Jennings relays are noted for fast operating speeds and the ability to withstand voltages and carry heavy currents, while maintaining low and stable contact resistance. Vacuum- and gas-filled relays options possible.
Jennings high-voltage relays are widely used in airborne, mobile and marine communications equipment. Jennings relays are noted for fast operating speeds and the ability to withstand high voltages and carry heavy currents (at frequencies up to 75 MHz), while maintaining low and stable contact resistance. The relays are available in vacuum SPST normally open (N/O) and normally closed (N/C) models, as well as vacuum SPDT and gas-filled relays configurations. Latching relays are available in some models.
- Long life, high reliability
- Low contact resistance
- High voltage & current carry capabilities
- Fast recovery rates
- Fast operating speeds
- Compact design
- Maintenance free
- Military qualified
Jennings relays Types
Jennings manufactures two common relay types:
- Clapper type relay
- Diaphragm relay
A Jennings vacuum relay consists of two main assemblies: the ceramic “switch” assembly, which contains the HV contacts, and the actuator assembly, which holds the actuation coil.
The two types differ in regard to the mechanical actuation. In the diaphragm relay, the actuator is placed outside of the vacuum envelope, whereas in the clapper type relay, the actuator is located inside the vacuum.
The assembly containing the coil is the driving part of the relay and will be connected to the driver circuit. As voltage is applied to the coil, a magnetic field is built up and an electromagnetic force is created. This force is used to move the mechanism and thus the movable contact inside the vacuum envelope. The contact transfers from the N/C to the N/O position or, in an SPST relay, opens your high voltage circuit.
Jennings vacuum relays are available in SPST normally open (N/O) and normally closed (N/C) models, as well as SPDT configurations. Vacuum is the ideal dielectric for high voltage relay switching.
Gas-filed relays provide low, stable leakage current in applications sensitive to current fluctuations. Pure high-pressure gas enables relays to attain high dielectric strength and avoid oxidation. This dielectric is ideal for the high in-rush capacitive make and capacitive discharge loads.