Radiation thermometer (CB7242E)

Found in a 1968 Mullard manual, this circuit measures temperature by infrared radiation. The sensor is of the type that is difficult to obtain today.

| Clique na imagem para ampliar |

Gain 10 Non Inverting Amplifier MC1536 (CB4494E)
The MC1436 can also be used on this circuit suggested by the 1993 Motorola Linear Interface ICs. The...
Unidirectional motion sensor (CB7281E)
Found in 1980s Electronic Engineering, this circuit uses common phototransistors as sensors. The...
Telephone amplifier with LM386 IC (CB967E)
The circuit shown is only for analog telephone lines. I found it in Popular Electronics (1991). It...