Electronics Design

Anything's possible

Old phone, battery expanded to triple thickness, looked like an imminent explosion, using it as a quad core CPU only, so...

1 comments posted 3yrs

posted by CK1

1 comments posted 3yrs posted by CK1

Rabbit ears switch

I can't believe I'm asking this after all these years but what exactly is the rotary switch on a rabbit ears antenna? M...

1 comments posted 3yrs

posted by mikerbgr

1 comments posted 3yrs posted by mikerbgr

Shoptimizer – Fastest WooCommerce WordPress Theme

Download Shoptimizer – Fastest WooCommerce WordPress Theme. Download link for lowest price => https://gplstage.xyz/shopt...

0 comments posted 3yrs

posted by akhbaarmasr19

0 comments posted 3yrs posted by akhbaarmasr19

electronics portal

https://en.wikipedia.org/wiki/Portal:Electronics I didn't realize that wiki has "portals."

1 comments posted 3yrs

posted by jlarkin

1 comments posted 3yrs posted by jlarkin

car emergency start battery

I bought 2 car emergency start battery packs from Amazon. One has about 15.5 volts on the open circuit battery cables....

12 comments posted 3yrs

posted by rmowery42

12 comments posted 3yrs posted by rmowery42

LT Spice Trick

Not everyone may know this one. Given a series string of unconnected parts, you can select the wire tool, the pencil ic...

3 comments posted 3yrs

posted by jlarkin

3 comments posted 3yrs posted by jlarkin

Don Lancaster: RIP

I remember when Don used to post on S.E.D. years ago. I talked wth him once or twice in the 90s. I bought a couple of h...

113 comments posted 3yrs

posted by boB

113 comments posted 3yrs posted by boB

Swapping transformer I/O

Can I use this for 220V input and 380V output? https://www.ebay.com/itm/255681909221 This should give me around 400V to...

10 comments posted 3yrs

posted by eddy711lee

10 comments posted 3yrs posted by eddy711lee

fabulous book

The Perfectionists by Simon Winchester. About the evolution of the concept of precision.

19 comments posted 3yrs

posted by jlarkin

19 comments posted 3yrs posted by jlarkin

power supply dynamics

I want to build a cheap-ish 8-channel DC power supply. Each channel can be a half-bridge, which is easy. If I filter wi...

21 comments posted 3yrs

posted by jlarkin

21 comments posted 3yrs posted by jlarkin

Cars and the chip shortage

Since microchips are such a small part of a car, how can the chip shortage be affecting them? Won't they just pay more...

8 comments posted 3yrs

posted by CK1

8 comments posted 3yrs posted by CK1

half wave rectifier

As part of an experiment with solar, I want to drive my 220V 3kW immersion heater with a suitable diode so that the eff...

81 comments posted 3yrs

posted by kraken.sankey

81 comments posted 3yrs posted by kraken.sankey

FPGA I2C sanity check

So we're doing this high speed lidar camera that I've been talking about. It has a Cyclone V system-on-module, which se...

10 comments posted 3yrs

posted by pcdhSpamMeSenseless

10 comments posted 3yrs posted by pcdhSpamMeSenseless

What happens if I connect a computer fan reversed?

Hi, What happens if I connect a computer fan reversed? A brushless one. I know it has electronics to produce a rotating...

16 comments posted 3yrs

posted by robin_listas

16 comments posted 3yrs posted by robin_listas

Can electricity conduct through a fine spray of water?

If there was a fine mist being sprayed (like you get from something you spray plants with), and there was a live wire so...

106 comments posted 3yrs

posted by CK1

106 comments posted 3yrs posted by CK1