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Author Topic: Digitizer 4 Noisy Transformer  (Read 454 times)

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MarshallJMP

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Re: Digitizer 4 Noisy Transformer
« Reply #15 on: Time Format »

Which setup?
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kissfan113

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Re: Digitizer 4 Noisy Transformer
« Reply #16 on: Time Format »

The setup you mentioned in the post before mine about the testing procedure using a meter on the fuse area.
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MarshallJMP

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Re: Digitizer 4 Noisy Transformer
« Reply #17 on: Time Format »

Ah yes ok understand now. I will do that tomorrow and post some pics.
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kissfan113

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Re: Digitizer 4 Noisy Transformer
« Reply #18 on: Time Format »

MarshallJMP, I got to digging around and found my old Simpson 260 meter it will measure milliamps quite precisely if that helps us sort things out
Kevin
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MarshallJMP

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Re: Digitizer 4 Noisy Transformer
« Reply #19 on: Time Format »

For better accuracy a true RMS meter is better but it will do the job. Haven't got around taking some pics, I'll do that tomorrow.
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MarshallJMP

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Re: Digitizer 4 Noisy Transformer
« Reply #20 on: Time Format »

I atytached some pics. Unplug the digitizer !!! Remove the fuse, hook up some crocodile clips on the connections of the fuse holder. Then connect these to your meter, one on the com one to the current input. (polarity doesn't matter) Set the meter to AC current (500mA). Plug in the Digitizer, turn it on and measure the current.

Now be very carefull this is mains voltage !!!!!!!!
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kissfan113

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Re: Digitizer 4 Noisy Transformer
« Reply #21 on: Time Format »

MarshallJMP, thanks for the pictures, I will try to do some diagnostic work this weekend and let you know the results. I’ll see what I can come up with for a true rms meter and the Simpson 260 analog meter is sitting on my bench right now as a standby.
Kevin
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