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Practical Electronics No 3 2026

Practical Electronics No 3 2026

Read in the issue 3 Practical Electronics 2026


USB-Programmable Frequency Divider/Counter by Nicholas Vlnen.
This small PCB doesn’t cost a lot but can reduce the frequency of an incoming signal
or pulse train by a factor of between 3 and 21,327,000 that’s easily configured over a
USB serial port. It can also provide basic frequency measurements.

Rotating Light for Models by Nicholas Vinen.
Here’s a simple circuit that has various applications, such as for a model lighthouse, or
as a siren on top of a model emergency vehicle. It sequences eight LEDs, using PWM
brightness control, to form a convincing imitation of a rotating light.

Power LCR Meter, part two by Phil Prosser.
This isn’t just another LC meter; it can deliver up to 30A to determine how an
inductor behaves as its core starts to saturate. It can also measure very high
capacitances and very low resistances. This article covers assembly, testing and use.

Contents:

English | 84 pages | PDF | 32.9 MB

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