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My Audio Sweep Generator Article

from "Electronics World and Wireless World"


Abbreviated Sweep Generator Article


My "Circuit Ideas"

from "Electronics World and Wireless World"


A NiCad battery charger

which I designed for the Ecuadorean armed forces


A few notes about 555 timers


volts or Volts?  V or v?

Amplifier power

Amplifier output, single vs dual supplies

Amplifier clipping

"RMS" watts

Polarity and Phase

Amplifer power vs supply voltage

"Common", "Ground" and Negative

Earth? Ground?

Earth Leakage Protection

Low power r.f. measurement

An r.f. sniffer

H.F. Directional Power Meter

Audio oscillator

Two tone oscillator

Time mark generator/Calibration voltage source

Using l.e.d.s

Transistor astable multivibrator

Resistor colour codes

Rectifier relationship

A few words about decibel notation

The Care and Feeding of NiCads

Vehicle immobiliser

Telephone off-hook indicator

Motor-cycle dual intensity tail light

Unit Conversion Tables

Paralleled resistors

Lots of calculations for electronics/audio

The Superposition and Thévenin's theorems


"A bit about capacitors"

Why do we put a diode across a relay's coil?

"Colpitts Audio Oscillator "

Miscellaneous circuits








Interested in amateur radio?

Click on the logo to go to QRZ






If you would like a Smith Chart screensaver you can download a static one here.

If you prefer one which moves slowly around the screen, download this one.

Neither of them are self-installing.  You will need to put them in the C/windows/system32 folder.

You can also run them from the desktop.




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