Tag: capacitor

Cdycam 3pcs/1bag PoE Splitter Power Over Ethernet 48V to 12V IEEE802.3af Standard Type 15W Power Supply Module For NonPoe Camera (WHL #119)

Here’s something that lasted just shy of five years – a PoE to 12V converter.

I just checked, I never wrote about these things…so here we go. Last week, the ESP32 in my living room stopped working. It does serve as a sensor station (temperature, humidity) for the DECT heater valve in the living room, and it also runs some LED stripes around the house, some of which are automated via iobroker, and some are activated by infrared sensors. They all can be changed over a simple web interface as well. Turns out: The ESP is fine, but the power supply, a PoE to 12V converter, is dead. […]


Post #100 HP 6644A refurbishment (#P14)

Not that anybody cares, but this is actually post number 100 already. I prepared something else that failed (to be reported!), so this one has to do instead ;)

My “lab” power supply situation is ageing and often no longer up to the task, think of LEDs north of 35V or anything that takes more than one amp at voltages that cannot be provided with common computer supplies (3.3V, 5V, 12V, 19/20V) easily. So this is part one of the refresh.

I bought a HP 6644A power supply around six weeks ago off eBay, at 245€ including shipping and rack mounts via best offer. […]