This bench circuit was found in Radio Electronics magazine from June 1958. The circuit does not have an external power supply. The circuit generates signals from 12 Hz to 180 kHz in 4 bands.
This circuit, with the help of a 15 V x 1 A source, allows to measure small resistances,...
This circuit uses a piezoelectric transducer to produce sounds like a buzzer. Frequency is...
We found this circuit in a Texas Instruments optoelectronics manual. The audio modulator serves for...