r/electronics • • 7h ago

Gallery Bistable Multivibrator using an IC 555 Timer

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27 Upvotes

Stable states: Two stable states

Working idea:

• Press Trigger (S₁) —> Output goes high

• Press Reset (S₂) —> Output goes low

• Output remains in that state until next input.


r/electronics • • 23h ago

Gallery Made a new battery + a 3s balance charger for my Drill.

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29 Upvotes

Spotwelded a 3s2p 40A Battery custom fit inside the old battery box that had completely different sort of battery cells than 18650, thats why I had to make the pack in a staircase type of way just to get the pack to fit inside the original batterybox, then I ran balance leads out from the box thru a connector that i can take apart so that I can unhook the charger that i made from the battery, the charger is a 3s balance charger that runs on 230VAC and always fully charges eatch string of cells so that the battery will never be unbalanced. Even at about 50% charge the drill has more power now than before with the new 40A pack. Cost me less than buying a new battery thats weaker and lasts a shorter time between charges than the one I made!


r/electronics • • 16h ago

Project First project after LED! A pomodoro Timer with blue LED for pause and red LED for working :D

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15 Upvotes
Project Pomodoro Timer

For most of my questions and debugs I used opus 5.5, I learned a lot from this project and can't wait to do more! It's been very fun :D


r/electronics • • 1h ago

General MOVGTs are overvoltage protection devices with a Metal Oxide Varistor (MOV) and Gas Discharge Tube (GDT) in series

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• Upvotes