Fuente WP210F11 - IGT G23 AC INPUT 100-240V/50-60HZ 8A MAX DC OUTPUT: 12V 25.66A 24 12.83A WP210F11 This is a big one. Let’s start by breaking the circuits down into sections. The drawing VIPER12A shows the AC coming in. No surprises here. The standard design of line filters to keep the noise the power supply generates off the AC line. Not many failures here. It gets rectified to generate the B+ line, about 160 VDC. Between the negative side of the bridge and ground there is a small circuit made of two parallel 0.100 Ohm resistors and a couple of diodes. This is our current sensing circuit. It will generate a small negative voltage proportional to the current on the B+ line. This will be no more than 1.2 Volts, limited by the diodes. Viper and Viper and VCC Next in line we have the Viper12A that takes the B+ line down to generate Vcc. This is the second thing that happens in sequence. The Vcc p
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