Voltage to frequency converter (CB9449E)

This circuit was obtained from a 90s Radio Electronics. The components used are from that time. The FET admits equivalent.

| Clique na imagem para ampliar |

Triangular Generator LM3900 (CB15629E)
To obtain triangular signals, we have the circuit in the figure that uses two amplifiers. One of...
Limiter with zener diode (CB7054E)
This circuit was found in an old Electronic Design. It makes use of sidacs and operational not very...
Audible Voltmeter (CB21395E)
This circuit was found in an American publication from 1969. Transistors are from the time and can be...