This power supply for gas laser (HeNe) was found in a 90’s Popular Electronics. It generates from 1300 to 1500 V using common components.
At each touch of the sensor this counter based on circuit 4017 advances one LED. The circuit can be...
The small transmitter shown in the figure can generate signals in the range of 50 MHz to 200 MHz....
When powering this circuit by activating S1, the lamp turns on smoothly in a time determined by...