I setup two small circuits on breadboard with BD139 transistors to drive a 12v 0.2A motor and 24v 0.15A Relay to learn transistors, I can switch ON transistor through base resistor using 3.3v PSU.
I know when motor/relay stops it can push back some current and i believe its called current spikes,
For motor generally ceramic capacitors are used and for relay a diode
I want to learn how can i calculate value for capacitor for motor and choose diode for relay, can we also use electrolyte capacitors to avoid these spikes?
I know when motor/relay stops it can push back some current and i believe its called current spikes,
For motor generally ceramic capacitors are used and for relay a diode
I want to learn how can i calculate value for capacitor for motor and choose diode for relay, can we also use electrolyte capacitors to avoid these spikes?