On Sat, May 4, 2024 at 09:34 AM, Rogerio O wrote:
I tested my dummy load after disconnecting the HV section and the HEPS went to ticking mode.
However, it worked when connected to the scope.
I think I have double checked all the connections, but I may be wrong...
Does anyone used the resistors values that Dennis Tillman suggested for the dummy load?
I wonder if the current drawn in one (or more) rail(s) is causing the protection circuit to turn on.
Thanks
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Hi Roger,
I looked at the schematic of Dennis Tillman load. It is for a different model and missing the load on 130V line.
Minimum load currents you need on 7904 (from H?kan):
-50 V: 0.08 A
-15 V: 0.8 A
+5 V: 0.4 A
+15 V: 1 A
+50 V: 0.2 A
+ 130 V: 0.036 A
+5 Lights: 0.3 A
Also see Morris's reply.
Ozan
