TL084


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phil99

Guru

Joined: 11/02/2018
Location: Australia
Posts: 2301
Posted: 11:34pm 24 Oct 2023      

Voltages to record.

Output of regulator should be 8V +/- 0.4

With the battery supply set to 13.9V pins 3 and 6 should be about 3.3V

Adjust Low-V pot for the same voltage at the wiper as pin 6 then measure pin 7 while turning the pot back and forth a little either side of that spot. It should switch between 0V and 8V as you do that.

Adjust High-V pot for the same voltage at the wiper as pin 3 then measure pin 1 while turning the pot back and forth a little. It should switch between 0V and 8V as you do that.

Pin 13 should be 4V.

Adjust Low-V pot for 0V at pin 9 and adjust High-V pot for 8V at pin 10, the Dump-On LED should light and pins 12 and 14 should be 8V.

The transistor should have 0.6V on the base and 0.2V on the collector and the relay should now be on.
Edited 2023-10-25 10:13 by phil99