If you have a modern function generator on your bench it is quite likely to contain a direct-digital synthesis circuit that creates arbitrary waveforms using a microprocessor controlled DAC. If you… ...

If you have a modern function generator on your bench it is quite likely to contain a direct-digital synthesis circuit that creates arbitrary waveforms using a microprocessor controlled DAC. If ...

Transistor Q1 inverts the square-wave output so the overall negative-feedback sense of the symmetry feedback loop is maintained, and diode D1 compensates partially for the VCE saturation voltage ...

2. The microcontroller-based emulation of a UJT ramp generator switches the function of an I/O pin from a high-impedance input state to an output state to implement the ramp-generation function.