Starting out, Troubleshooting Electronic Circuits, A Guide to Learning Analog Electronics,
by Ronald Quan, is a highly recommended source for the beginning hobbyist.


Here's a quick look at a power supply, AC/DC variable, at one of my work areas.

project 1



Here's a closer photo. The AC section is a voltage divider, and the DC is variable up to 24 Vdc.
A small clear plastic cover to the left, is placed over the AC input.

Another much better power supply.
Variable AC & DC.
Front, top view.
Components underneath but most behind the wood display support.


A good quality DC power supply is not that expensive.
Here's one I rely on

Capacitors used to be called condensers, the thought being electrons
would 'condense' on one plate, with a deficiency on the other.


Old electronics projects

Here's some old electronics projects. A solid background in the photo would have helped. The wires on the right are
neatly wrapped, while on the left on another project they are extended to allow for various movement adjustments.
Arduino projects are fun to work with, and not that expensive to build.


Great Crystal Radio Project Link
Also a one transistor amplifier/detector
A very high gain crystal earphone amplifier
And a simple two-transistor radio
Experiments with detecctor diodes



A radio, but no battery!
Just a coil, variable capacitor, diode, resistor, and reg. capacitor.
With an antenna of only six feet, I could get two stations.
The connectors on the right are for the changes as I modify and add to the radio.
Several rows of connectors (only one rowshown) allow for additions .


Here's a partial view of my work desk.
The yellow fan draws smoke from the soldering iron,
an addition I should have bought years ago.


This is a small section of my electronics parts shelves.
I recently redid everything, and labeled sections so it's much easier to find things.

In first doing a new project, it is often easier to use a solderless breadboard to design and test it.
Then go to the soldered project on a display board, as I've done in two photos above this one, also shown below.

Here I'm using it to connect to the basic coil/capacitor unit of the display board,
and so have output to a speaker instead of a high impedance earplug.

Chart for conversions between units of measure

7 Key Factors of Crystal Oscillator Circuit Design (bliley.com)

How To Build Crystal Oscillator Circuits

Hobby Circuits

Theremin and other projects

Transistor Cross-Reference


Write me at willwrtr@yahoo.com

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