This wide-range radiation monitor was found in a 1980s documentation. The circuit uses a diode as a sensor and is quite critical requiring shielding shown in dashes to prevent snoring due to gain.
The circuit shown in the figure consists of a system for driving white LEDs (WLEDs) at low...
In the figures we have an infrared transmitter with a BC337 switching transistor that must be...
The operational amplifiers of this circuit can be replaced with more modern equivalents. The power...