i drive a relay by a transistor and base is conected to pt2272.relay drive a dc motor.whenever motor isnot conected to relay,circuite worke well.but when motor conect , ic and 7805 becom hot and circuite dosnot worke.plz hlp me
circute has problem to inductans loads becease when i conecte a resistor instead of motor , it works well
no.i connected it to vcc.it is right.when motor is disconnect, it worke well.According to your schematic, the motor current doesn't come from 7805 output, the relay pole is connected to Vcc which is the input of the 5V regulator. Perhaps by mistake, you connected the pole of each relay to 5V instead of Vcc ;-)
Kerim
it use free wheeling diode and put 2200uf capasitor parallel to it.it becom beter but it dose not becom well compeletbe sure that reverse and direct voltage produce by motor when you turn on and turn off or changing motor polarity don't effect into source.
maybe if you place zener diode before regulator ,it protect your regulator against over voltage.
so you use free wheeling diode for each transistor (safety).
What do you mean by well complete?
That cap you added might be sucking energy away from the motor.
$ 1 5.0E-6 10.20027730826997 50 5.0 50
t 256 272 336 272 0 1 -5.690645832236385 0.0 100.0
w 336 176 416 176 0
w 336 256 416 256 0
w 416 256 480 256 0
w 416 176 480 176 1
d 416 256 416 176 1 0.805904783
l 512 176 512 256 0 1.0 0.016854707487265246
R 336 176 336 96 0 0 40.0 5.0 0.0 0.0 0.5
g 336 336 336 416 0
R 224 272 160 272 1 2 100.0 2.5 2.5 0.0 0.5
r 480 176 512 176 0 100.0
w 512 256 480 256 0
r 336 176 336 256 0 100.0
w 256 272 256 320 0
w 336 288 336 320 0
w 336 320 336 336 0
r 256 320 336 320 0 100000.0
w 224 272 256 272 0
o 6 64 0 35 5.0 0.05 0 -1
javadamirpoor said:when i conecte a resistor instead of motor , it works well
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?