Yeah, I figgered.Thanks Ron,
I had interpreted your formula as :- 0.57 x V / Rs.
Regards
pilko
Yeah, I figgered.Thanks Ron,
I had interpreted your formula as :- 0.57 x V / Rs.
Regards
pilko
Q3 limits the output current when reset is pressed while the output is overloaded. This will limit the current to about 2.5A when Rs=0.27Ω. This can still cause damage to the FET if the switch is depressed for very long. Without Q3, in the case of a short across the load, the current can destroy the FET and/or Rs. In the case of only minimal overloads, you will be better off without Q3.Ron, please elaborate on the purpose of Q3, it's eluding me.
Ron, thanks for clearing that up. Your circuit has a very high clever quotient.Q3 limits the output current when reset is pressed while
the output is overloaded.
Yeah, detector and protector, all in one! The relatively large value sense resistor might be a problem, though, as it will tend to compromise speed regulation and torque.Hey Ron, it just hit me that your circuit would make a nifty stalled motor detector. Kind of handy when a limit switch doesn't do what it's supposed to!