DC Interface Unit

Block Diagram of FineTest DC Interface Unit

Application

Power Supply Testing

Features

DC On/Off Relays in series with Safety Interlcok:

To insure operator safety, this unit prevents the application of DC power
until a micro switch in the test fixture's safety cover completes the circuit.


The unit provides 2 signals for each DC Source in the Tester:

DC Control:
This control signal is in series with the System Interlock.
This means that the DC Interface On/Off Relays will remain open until the following two conditions are met:

1. Safety Interlock is closed
(typically a micro-switch in the Test Fixture)

AND

2. DC Control is closed
(typically closed by a General Purpose Relay under Computer Control)



An optional Shunt or Hall Effect current monitor can be added to the DC Interface Unit.

DC Current Monitor:

This signal can be used to measure the DC Source Output Current.
It is typically used for DC/DC Converter Efficiency Tests

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More Details...

A FineTest DC Interface Unit showing:

High Voltage and High Current Vacuum DC Relays for a High Power DC Source

Optional general purpose Linear DC Power Supplies for Test Fixtures (Fans, LEDs, relay control etc.)