MT3608 problems

Author	Message
BrianP Senior Member Joined: 30/03/2017 Location: Australia Posts: 292	Posted: 09:08am 08 May 2019       Hi OA47 We need to know the max current rating of the module. Then we can work out what resistor is needed to limit the current. OHM's law - Volts (from module) / max current allowed (amps) = resistance needed. eg. for 50 volts out & 50mA current the resistor would need to be 50/.05 = 1000 ohms. A good idea to err on the side of caution & use a higher resistor value, just be aware that the higher the resistance the longer the charge time of the capacitor. Depends on how often you need to trigger the solenoid. Use @palcal's link to work out the charge times. Cheers Brian P. edit - Volhout beat me to it...Edited by BrianP 2019-05-09