S Meter Circuit Diagram. S meter circuit diagram. Its salient features are.
The circuit diagram for a direct coupled amplifier dc voltmeter using cascaded transistors is shown in figure. 1 kw power watt meter electronic circuit diagram. An attenuator is used in input stage to select voltage range.
Prior to supplying power to the capacitance meter circuit use a fine screwdriver to adjust the meter m1 needle precisely to the zero level.
Referring to the circuit diagram of the simple frequency meter 3 bjts at the input side work like voltage amplifier for amplifying the low voltage frequency into a 5 v rectangular waves to feed the input of the ic sn74121. Here the circuit is dimensioned for an if of 455 khz. 3 simple ac wattmeter circuits eleccircuit com. It can be used to measure voltage current and resistance.