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Refurbishing vintage 12V battery chargers.

Power Electronics 2 weeks ago at 08:47 PM

Last message by rebelrider.mike on April 24, 2024 at 12:46 AM

9 Replies
236 Views
Pulse transformer cause short through, coupling capacitor selection

Power Electronics 6 hours ago at 09:27 PM

Last message by johnson35762 on April 23, 2024 at 09:27 PM

0 Replies
44 Views
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Solar power supply for wireless weather station

General Electronics Chat 11 hours ago at 04:24 PM

Last message by djreiswig on April 23, 2024 at 07:56 PM

10 Replies
75 Views
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Mobility Scooter Power Supply Repair (2)

Power Electronics 5 days ago at 07:49 PM

Last message by MisterBill2 on April 23, 2024 at 05:47 PM

3 Replies
80 Views
How to calculate input power of buck converter if efficiency is unkown?

Power Electronics 18 hours ago at 09:13 AM

Last message by WBahn on April 23, 2024 at 03:22 PM

17 Replies
113 Views
Something wrong with the circuit-ESP-32s not working as intended.

Digital Design 15 hours ago at 11:59 AM

Last message by Parapara29 on April 23, 2024 at 03:17 PM

10 Replies
101 Views
role of optocoupler for biasing drain of amplifiers

PCB Layout , EDA & Simulations 6 days ago at 10:21 AM

Last message by Irving on April 23, 2024 at 12:31 PM

12 Replies
273 Views
Where did you personally use or see LM317 applied to?

Power Electronics 3 months ago at 12:45 PM

Last message by dl324 on April 23, 2024 at 09:46 AM

361 Replies
7569 Views
System turning off when Antenna is connected

Wireless & RF Design One week ago at 01:47 AM

Last message by ElectricSpidey on April 22, 2024 at 09:04 PM

4 Replies
133 Views
9 Replies
116 Views
Feeding 4x ESP32-cam

General Electronics Chat 2 months ago at 03:19 PM

Last message by PsySc0rpi0n on April 22, 2024 at 01:00 PM

76 Replies
1281 Views
Maintenance of an old DC motor

Technical Repair One week ago at 02:27 AM

Last message by KeithWalker on April 22, 2024 at 12:14 PM

18 Replies
228 Views
Have i been thinking about a buck converter wrong this whole time?

Power Electronics 3 days ago at 09:39 AM

Last message by DickCappels on April 21, 2024 at 10:18 AM

29 Replies
328 Views
Zener diode as an Off switch in a 12- volt DC circuit?

Digital Design One month ago at 02:17 PM

Last message by ElectricSpidey on April 21, 2024 at 07:24 AM

10 Replies
352 Views
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Lavalier Microphone Tester Circuit

Test & Measurement About 2 weeks ago at 08:25 PM

Last message by MisterBill2 on April 21, 2024 at 07:11 AM

5 Replies
134 Views
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Different readings when testing a diode on-board and off-board

Test & Measurement About 2 weeks ago at 10:23 AM

Last message by MisterBill2 on April 21, 2024 at 06:57 AM

4 Replies
132 Views
Alternative for AP3031KTR DC/DC step up converter

Power Electronics 6 days ago at 10:03 AM

Last message by rick.curl on April 20, 2024 at 06:49 AM

3 Replies
168 Views
120V Smart Dimmer to control zero cross SSR

Power Electronics 6 days ago at 02:26 PM

Last message by Ian0 on April 20, 2024 at 12:06 AM

5 Replies
314 Views
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Half Bridge soft switching questions

Power Electronics About 2 weeks ago at 10:47 AM

Last message by jpcastellino on April 19, 2024 at 11:38 PM

3 Replies
389 Views
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Buck Converter Startup sequence

Power Electronics 5 days ago at 03:55 PM

Last message by eetech00 on April 19, 2024 at 09:04 PM

17 Replies
207 Views