Bargraph thermometer (CB9360E)

Found in Radio Electronics from the 90s, this thermometer uses an integrated circuit that is unusual today. The sensor is a thermistor or NTC.

| Clique na imagem para ampliar |

FM Booster (CB26081E)
We found this circuit in the December 1998 issue of Electronics Now magazine. RF transistors such...
Temperature to frequency converter (CB9611E)
This circuit was found in an American documentation from the 80's. The sensor is a special...
Automatic Lighting Control (CB17427E)
This circuit automatically controls the degree of illumination. As the circuit is from 2001, it...