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EEZ Bench Box 3 - Sequel to EEZ H24005
prasimix:
What is your firmware now: 1.7.3 or 1.8-alpha1? We changed something around OVP but if you think that something is wrong with DP run a simple list or func generator as square wave and check in YT view if falling edge is too large.
elekorsi:
FW is 1.7.3
I managed to start the FG, but with very low voltage. Ampl=1Vpp, Offs=1,5V, f=50Hz. If i go higher with the Offs, i get an error and can't measure anything...
And it appears to be a problem with the down-programmer, as you can see on the scope print screen. CH1 is the faulty DCP and CH2 is a good one for the reference (with same parameters in FG as faulty DCP)
prasimix:
Yes, if the DP is not turned off it is damaged. Please check R29 and Q5.
elekorsi:
Thanks, you were right, it was R29...
prasimix:
Right, power resistor in 2512 package is really for optimists. In next revision it will be replaced with TO-220 THT!
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