Differential Output Amplifier (CB6135E)

This circuit of old American documentation (1965) can be applied to any transistor.

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TTL interface with optical coupler (CB25492E)
The figure shows how to couple two TTL circuits using an optical coupler to obtain isolation. The...
Medium impedance stage (CB20563E)
We found this circuit in an English publication from 1963. The circuit uses germanium transistors of the...
Monostable 4001 (CB25118E)
This two-port configuration of the 4001 was found in the April 1988 issue of Radio Electronics magazine....