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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Photodiode amplifier 2 (CB6790E)
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High Stability Regulator (CB14162E)
The circuit shown is from National Semiconductor's Linear Applications Handbook, published in...
Voltage tripler with the 555 II (CB1240E)
This traditional triplier configuration with the 555 can be found in other articles on the...