Re: Off Topic: Wanted Spectracom 8212 Chart Recorder Manual

Ed Breya

Dennis, remember the TM500 has AC power available inside by virtue of the floating LV AC windings - two per slot, so two slots could give four windings at 24V-30V (I forget the specs) each that could add up to around 110-120V (especially if that's the only load) - probably close enough. Or, a single winding through a small step-up transformer could do it to. I presume the chart paper drive is one of those old-school synchronous clock motors with built-in gearbox to get whatever speed is needed. Those only take about 3W, as I recall.


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