This circuit is from a Radio Electronics from October 1963. The transistor is a power transistor of the time, and two transformers are used. The input has 10k impedance and is powered by 12 V.
The figure shows how to implement an inverter amplifier with a Norton operational amplifier. The...
This is a commercial circuit for an AM radio with 4 transistors, published in a Japanese magazine in...
This circuit is indicated for the analysis of TTL circuits being powered by 5 V taken from the...