We found this circuit in a 1980s Motorola documentation. The circuit makes use of common operating and the voltage depends on the used type. The components are for a frequency of 500 Hz.
This circuit can serve as the basis for a simple phone. The LM10 is not common today, but the...
In this circuit, unlike the previous (CB1331E) the increase of the light in the sensor, makes the...
The operating frequency of this circuit is 465 Hz and the input voltage is 12 VAC. The circuit is...