Ramp generator in orcad

[Sadegh.j]

Hey

How do we make a ramp generator in Orcad?

 

[narccizzo]

you have to place a pulse generator and adjust rise time,

Added after 52 seconds:

on time, fall time and off time.
regards

 

[Sadegh.j]

The problem is a synch voltage should be given to the circuit and the ramp generation should be synchronized with it.

 

[narccizzo]

ohh, I see try changing the delay time parameter.

 

[narccizzo]

or implement an integrator with an opamp and use a transistor to discharge the capacitor of the integrator, and there you have your ramp generator with synch input.

 

[Kurniawan]

use 555 as ramp generator, see datasheet NE 555