100 MHz Oscillator (CB8051E)

This oscillator was found in a 1967 EEE. The transistor supports a modern equivalent. The power supply is 20 V.

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Window Comparator with the CA3140 (CB12151E)
This well-known configuration was found in a 1982 publication. Other operational amplifiers can be...
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Suggested by General Electric in 1965 documentation this circuit is intended for the 120 Vac...
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Combined with the two previous circuits, we can create a simple multimeter with this circuit. The...