Non Inverting Amplifier (CB6433E)

Based on an operational of the time, this Popular Electronics circuit can be designed with any equivalent operational.

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Photodiode Amplifier (CB905E)
The gain for this circuit is given by the ratio between R2 and R1. The circuit is suggested by...
MW Radio (CB19178E)
This receiver is from European documentation from the 90s. The integrated circuit is uncommon, and the coil...
3-gate crystal oscillator (CB8056E)
Found in a 1970 EEE, this circuit can be applied to TTL ports. The supply is 5 V and the...