This high voltage gas laser source was found in an American publication from the 1990s. The circuit has an input for PWM modulation.
In the figure we have a high input impedance stage with a general purpose PNP transistor. An NPN transistor...
August 2017 - The PIC32MM microcontrollers of the Microchip 32-Bit Family can be obtained from...
We found this circuit in the March 1991 issue of Radio Electronics magazine. The integrated...