audioguru Posted September 12, 2013 Report Share Posted September 12, 2013 i have my supply connected in parallel and works fine.It is difficult to set each supply to exactly the same output voltage.One supply might be 20.1V and the other is 20.0V.The one with 20.1V will power the load and the one with 20.0V will cause the driver and output transistors to exceed their maximum allowed reverse-bias emitter base voltage (5V and 7V) and break down slowly, because the opamp U2 will see that the output voltage is too high and will try to reduce it by driving the base of the driver transistor to ground. Then all 3 transistors break down. Quote Link to comment Share on other sites More sharing options...
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