Binary Counter (CB6139E)

This General Electric circuit is from the 80's. The PUTs used in this meter are not common components today.

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Low Voltage Flasher (CB5213E)
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In the figure we have the way to obtain an adjustable constant current source of 2 mA. The...
13.8 V x 35 A Power Supply (CB1221E)
This circuit was obtained from an American publication of 1982, but can be easily assembled today...