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volt/amp/watt meter

Posted: Tue Jun 07, 2022 4:43 pm
by back-2-mono
As much as I have great respect for the kill-a-watt, I thought, self, 'I can make my own'!
So, with a bunch of scrap lumber, a can of black spray paint, covid boredom and all other items required except for the three meters, this handy little box turned out extremely well.
It sits right on top of my Tice variac and allows me to monitor all aspects of juice as I turn up the volts on a piece of old hi-fi gear...

Sorry about the poor pix.

Re: volt/amp/watt meter

Posted: Wed Jun 08, 2022 1:21 am
by hermitcrab
nice , I made one myself minus the digital readout also operated through my variac... to figure watts I use a calculator

Re: volt/amp/watt meter

Posted: Wed Jun 08, 2022 2:37 am
by TC Chris
Cool! Can you share a schematic and parts list?

Chris Campbell

Re: volt/amp/watt meter

Posted: Wed Jun 08, 2022 4:18 pm
by back-2-mono
TC Chris, here ya go...

Baumain DH-670 series 0-5 amp ac analog meter
Baumain DH-670 series 0-150 vac analog meter
Drok 200123 digital ac meter
Reliable Hardware RH-0570 black handle (Fender amp style)
15 amp duplex outlet
DPDT center off switch
4 rubber feet
Panel mount fuse holder
3-wire power cord

The 3 meters are available from Amazon and probably elsewhere.

Re: volt/amp/watt meter

Posted: Wed Jun 08, 2022 11:57 pm
by TC Chris
Now I feel kinda dumb for asking, except that the parts list is useful. So basically it's either the digital meter or the two analogs. That's easy enough.

Chris Campbell