Found in Motorola documentation from the 1980s, this circuit employs an integrated device from that time, which is unusual today.
This simple receiver with junction FET uses a high impedance magnetic earphone (over 2 k). Power...
This HeNe laser power supply was found in the March 1989 issue of Radio Electronics magazine. This...
This circuit of the 70's uses transistors of the time. The circuit can amplify signals from 10 Hz...