Hi team.
I am trying to build a simple, ramping, linear pulse generator which increases in current much faster than the time to decay for a self designed medical research project.
The circuit design is driving me insane! I need a steep rise and a slow decay and I know I need a capacitor for the pulse behaviour, a resistor to slow the decay time and perhaps pnp transistors to ensure a linear rise in current while charging the capacitor.
but..
how it all goes together puzzles me greatly! Especially where i should attach the outputs for the waveform.
Guys, how can i set up a circuit that gives me a sharp (hopefully linear) current rise and a slowed decay time?
ANY help would be MUCH appreciated!
with kind regards
michael.
I am trying to build a simple, ramping, linear pulse generator which increases in current much faster than the time to decay for a self designed medical research project.
The circuit design is driving me insane! I need a steep rise and a slow decay and I know I need a capacitor for the pulse behaviour, a resistor to slow the decay time and perhaps pnp transistors to ensure a linear rise in current while charging the capacitor.
but..
how it all goes together puzzles me greatly! Especially where i should attach the outputs for the waveform.
Guys, how can i set up a circuit that gives me a sharp (hopefully linear) current rise and a slowed decay time?
ANY help would be MUCH appreciated!
with kind regards
michael.