Timeline for Why is the LM7812 getting hot in this circuit?
Current License: CC BY-SA 4.0
4 events
| when toggle format | what | by | license | comment | |
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| Jun 22, 2023 at 17:58 | comment | added | Hazardous Voltage | do you have an idea how should I calculate the resistor for the Zener? | |
| Jun 22, 2023 at 3:58 | comment | added | brhans | @HazardousVoltage if you put a resistor on series with the zener, then the zener would be less effective at preventing the LM7812 from being destroyed by over voltage. | |
| Jun 22, 2023 at 2:54 | comment | added | Hazardous Voltage | I get your point, but would it be better if we used a resistor in series with the Zener diode so it gets less warm because I need it somehow to be stable and works for a long time? I will update the design and put the input capacitor and use a feedback diode too. | |
| Jun 22, 2023 at 0:57 | history | answered | user338146 | CC BY-SA 4.0 |