i have got a circuit diagram for this. but it's little clumsy to understand. will post it in few minutes. i wanted it to be used to measure voltage, with some modifications.
nice that you have the concerned sch. Once the switch is placed on DC V and concerned range, you can always measure. If switch is faulty , Concerned pins can be shorted and permanently it becomes a DC DVM OR AC depending on which one you selected.
Hi, long time...
what i wanted to do is to dismantle the DMM (in above picture) and only use it for AC Voltage Measurement. I'll be doing some modifications to this circuit based on the requirement of my project.
better NOT to.
now a days Modern DMMs are coming with all SM<Ds .
Use of such modules for continuous measurement of AC ( with fluctuations ) might reuslt in damage to the module as many smd resistors might blow off.
better NOT to.
now a days Modern DMMs are coming with all SM<Ds .
Use of such modules for continuous measurement of AC ( with fluctuations ) might reuslt in damage to the module as many smd resistors might blow off.
yeah... but i'm not gonna use it continuously for sure. Hope it won't impair the model's working.i think i wont get a through hole dt830 nowadays. anyway will check the type of the DMM, and will reply.
you get a ready module cheaply, may be you like LED panel meters for AC voltage measurement. and waht to experience making one from scratch.
secondly
there are some elektor designs of previous decades for dpm modules with LCD glass. it would consume less.
you get a ready module cheaply, may be you like LED panel meters for AC voltage measurement. and waht to experience making one from scratch.
secondly
there are some elektor designs of previous decades for dpm modules with LCD glass. it would consume less.
why should you remove other components?
Just remove the rotary switch
imagine which locations are to be connected , say for 230V AC or 750V AC range
solder them accordingly
close the round hole by some decorative , your AC voltmeter is ready !!!