SEQ 4
Sequence Controller
max. 18 A • +12 ... 32 V DC
This sequence controller was especially developed for power amplifiers with a supply voltage of 26 ... 32 V.
Many coaxial relays have a too low isolation between the ports during the change-over. If the power amplifier (in a transmit-receive system) is switched too early, this may lead to damage or destruction of the input transistor in the preamplifier or converter.
With a sequence controller, this trouble can be avoided. The sequence controller provides a control signal for the coaxial relay and it switches the voltage supply for the power amplifier. There is a time delay between the two signals to guarantee safe switching.
| Specifications | |
| Type | SEQ 4 |
| Supply voltage | +12 ... 32 V DC |
| Current (Output) | max. 18 A |
| Control output (for relay) | switches to ground (GND) |
| Switching delay | typ. 100 ... 150 ms |
Block diagram
Switching delay (diagram)
Applications
- Control circuit to sequence the switching of power amplifiers and coaxial relays in transmit-receive systems. It can be used with transverters of the MKU-series by DB6NT
- Suitable for LD-MOSFET power ampllifiers with 26 ... 32 V supply voltage
- Alle Angaben ohne Gewähr -
