U37 is a 741 op amp
U34 is a Multiplexer 4053
Pin#14 has an AC voltage
U37 output is in DC volts
1.) How does the U34 the multiplier convert an AC voltage into a DC voltage or does U37 convert the AC voltage into a DC voltage?
2.) R203 is a 88.7 k ohms , the AC voltage is in AC millivolts , the resistor has drifted to 88.3K ohms
88.7K ohms to 88.3K ohms is a big change when dealing with millivolts, why is that? how much of a change is it? because it's in millivolts
3.) How do you check the continuity from U34 pin#14 and Pin#13 and the continuity from U34 pin#14 and Pin#12?
When the power is On? i need to measure the resistance from these pins
4.) How are they using U34 multiplexer chip? it's used as a solid state relay
U34 is a Multiplexer 4053
Pin#14 has an AC voltage
U37 output is in DC volts
1.) How does the U34 the multiplier convert an AC voltage into a DC voltage or does U37 convert the AC voltage into a DC voltage?
2.) R203 is a 88.7 k ohms , the AC voltage is in AC millivolts , the resistor has drifted to 88.3K ohms
88.7K ohms to 88.3K ohms is a big change when dealing with millivolts, why is that? how much of a change is it? because it's in millivolts
3.) How do you check the continuity from U34 pin#14 and Pin#13 and the continuity from U34 pin#14 and Pin#12?
When the power is On? i need to measure the resistance from these pins
4.) How are they using U34 multiplexer chip? it's used as a solid state relay