ok have changed, please check,... is it ok ?
another question,...
Im a little confused.... 22uf in your PA Protect DC protection goes to GND ?
In my schematic C38 goes to GND with 220K and 2n5551, is this right or wrong
22uF goes to GND, sorry for my bad English. 22uF and 150k are DC filter, and if there was DC voltage 2N5551 or 2N5401 conduct and voltage on B,C point of BD241C drop under 400mV, comparator B output goes to +15V...
hi apexaudio
greetings can you tell me the function of the 2 diodes
IN4148 CONNECTED TO BASE OF BC550 BC560 IN VERTEX SCHEMATIC
i am getting 56 volts positive dc on output have not connected output
transistors made driver stage till second pair where two 1K OHMM RESISTORS
ARE CONNECTED THE VI LIMITER TRANSISTOR BASE any reason why there is dc output will be very helpful
thanking you
andrew lebon my supply is 70 0 70 dc
greetings can you tell me the function of the 2 diodes
IN4148 CONNECTED TO BASE OF BC550 BC560 IN VERTEX SCHEMATIC
i am getting 56 volts positive dc on output have not connected output
transistors made driver stage till second pair where two 1K OHMM RESISTORS
ARE CONNECTED THE VI LIMITER TRANSISTOR BASE any reason why there is dc output will be very helpful
thanking you
andrew lebon my supply is 70 0 70 dc
Remove R2 (30k) to disconnect DC servo and measure DC voltage on 33V zeners, on resistors R69, R70, R71, R72 (680R), R88,R89 (68R) you must have 1,12V... Go to post #997 and look at the schematic without step driver for test on low power.
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