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Tube Time » Blog Archive » 555 Contest Entry edit / delete
AM radio receiver using a CMOS 555. Awesome!
to 555 electronics radio ... on 23 March 2012
Simple High-Power LED Regulator edit / delete
I probably have all these bits in my junk collection.
to electronics led power psu ... on 23 March 2012
monolithic integrated circuits edit / delete
Early IC families. I've got a few of these in my interesting-old-parts tray (and rather a lot of the uPD RTL chips).
to chip electronics history ic retrotech ... on 16 March 2012
The Curious C-Beeper edit / delete
A capacitance meter with an audible output. Lots of alternative uses suggested.
to electronics test-equipment ... on 04 March 2012
M1KTA's QRP ham radio blog: HRO-5 underside edit / delete
A nicely-restored example.
to electronics hro radio retrotech ... on 04 March 2012
Aerial Analyser Details edit / delete
In terms of features, pretty much a DIY MFJ-259 -- but built entirely out of common components, and including source code for the microcontroller.
to amateur analyser antenna electronics hf radio test-equipment ... on 27 February 2012
Welcome to the PA3CSG website! edit / delete
Big RF amplifiers with cheap Russian valves, and serious filters for them.
to amateur amplifier electronics hf radio rf valve vhf ... on 27 February 2012
Building custom keyboards with low activation forces -- mostly as piles of microswitches. Looks fun.
to electronics input-devices keyboard ... on 27 February 2012
resources:surplus [MightyOhm Wiki] edit / delete
List of surplus suppliers around the world. The UK is very short of them, sadly.
to electronics shopping surplus ... on 27 February 2012
The original transistor-on-a-four-pole-switch transceiver.
to electronics fet ham radio reflex ... on 27 February 2012
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tasty by Adam Sampson.