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Is a Tri-Stable Multi-vibrator even possible?

M

MisterBill2

Joined Jan 23, 2018
18,566
eetech00 said:
The circuit in post #1 will work if you add a startup circuit to make begin oscillating.

Add a larger cap, maybe 100uf, from +5 thru a 1k resistor to ground. Then connect the junction of the cap and resistor to the base of Q1.
It should begin to oscillate at a rate easy to see.

eT
Click to expand...
It is also important to have functional transistors in the circuit. Devices with an HFE, or hfe, of Zero seldom provide adequate gain.Constanyine has verified this, I believe.
 
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