Institute Newton C. Braga

Circuit Bench

Two Transistors MW Radio (CB11157E)
This simple MW radio circuit with two transistors was obtained in an Argentine publication from...
Low Voltage Oscillator (CB6188E)
This circuit operates at a voltage of 1.3 V from a single mercury cell. We found in an old...
Tuned Shortwave Antenna (CB25749E)
This shortwave preselector was found in the July 1994 issue of Radio Electronics magazine. The...