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.

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100 Hz high pass filter (CB6935E)
Found in Radio Electronics from the 90s, this circuit uses a 741 and can be changed to other...
Voltage Follower with the LF357 (CB3993E)
The circuit is of the Motorola Linear Databook of 1990. The power source must be symmetrical and the...
Magnetic Pickup Amplifier (CB4950E)
This circuit was found in a 1980s documentation. The operational amplifier is of a common type at the...