Hobby Electronics Basics

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PCB Motor: 97% Efficiency and 12 kW/ kg Power

Also easy to retool the plant for different size motors. https://insideevs.com/news/453557/infinitum-electric-pcb-motor-...
0 comments posted 5yrs
posted by bretcahill
0 comments posted 5yrs posted by bretcahill

Power supply trips CU

I bought a 12volt 8.5amp TDK Lambda power supply from Radio Spares to replace a Mean Well 12v 8.5a supply which had fai...
15 comments posted 6yrs
posted by rob
15 comments posted 6yrs posted by rob

Non-thermal microwave injuries

When the first reports of diplomats at the American Havana Embassy falling ill were caused by microwave injuries it see...
3 comments posted 6yrs
posted by bp
3 comments posted 6yrs posted by bp

E field impedance

As the story goes, the E field starts with high impedance and it goes down until it's equal to the H field impedance in...
10 comments posted 6yrs
posted by fizzbintuesday
10 comments posted 6yrs posted by fizzbintuesday

MCU reset during relay switches ON

Hi, Could any please suggest how to avoid MCU reset with voltage glitches/noise during relay switches ON. I have protec...
7 comments posted 6yrs
posted by nireshsharanya
7 comments posted 6yrs posted by nireshsharanya

Who knows GPS antennas?

I have been looking online but there seems to be, for a lot of the antennas, an assumption of prior knowledge. That I d...
2 comments posted 6yrs
posted by etpm
2 comments posted 6yrs posted by etpm

Solid state relay questions

My water comes from a well. When the well was drilled I had only built my shop and so the well is now powered by my sho...
8 comments posted 6yrs
posted by etpm
8 comments posted 6yrs posted by etpm

results of AC buck tranny

I wired a 24VAC transformer to my Air Conditioner to lower the incoming line voltage to 220 from ~250 VAC. The old AC w...
8 comments posted 6yrs
posted by default
8 comments posted 6yrs posted by default

how to reduce the mains voltage

I have an older window air conditioner that I'd like to hang on to for a few more years. The name plate says it is 220...
26 comments posted 6yrs
posted by default
26 comments posted 6yrs posted by default

Error of % + digits?

I just bought an amp clamp meter, and it states the error is "+/- 1.9% + 3 digits". What does the "3 digits" part mean?
125 comments posted 6yrs
posted by CFKinsey
125 comments posted 6yrs posted by CFKinsey