How to wind Toroids

In this chance we want to post how to wind Toroids may this explanation will help you to understand.  The effective inductance of a toroids coil or a transformer winding depends in part on the...

Radio Frequency Circuits Design

The designer of amateur equipment needs to be familiar with radio-frequency circuits and the various related equations. This section provides the basic data for most amateur circuit development.

Electronic Components Cable You must Know

Lines are required so that the individual components of a circuit can be connected to one another. Connection cables usually consist of copper wire that is covered by an insulating plastic sheath. ...

Electronic Components Symbols Voltage and Current Sources you Must know

Electronic symbols overview

The various components are represented by corresponding symbols in electronic circuit diagrams. The following list is intended - without claiming to be exhaustiv...

How to Build Audio DIY

My (first) version of Class-A

Some time ago, I ran across the net in the creatures of Jean Hiraga. In particular, my attention was captured by the apparent simplicity of two of his class A ...

How to Build a Tube Amplifier - DIY Project

This tube amplifier design uses EL84 / 6BQ5 tubes. It is very simple to make and quite inexpensive.
The output transformers are not large so they are inexpensive and inexpensive. This feature ...

How to Build a tube amplifier - Practical realization

It is obvious that the first thing to do is to get all the material, electrical and not necessary. The next step is to "present" the components on the aluminum plate, and to decide the position to ...

The bootstrap circuit

With many transistor circuits in the basic emitter circuit, the static operating point is set in a stable manner with the aid of a base voltage divider and a low-ohm emitter resistor. Both affect t...

Switch-on delay and DC protection for Hi-Fi amplifiers - the ideal loudspeaker protection circuit

The circuit consists of a DC detector (T1-4), which was not developed by me, and a controllable flip-flop with automatic reset (T5-8) that delays switching on and delaying the loudspeaker relays im...

Reflow Soldering Oven with a Stencil and Soldering Paste

In this article I will talk about the transformation of a 35 € oven into a reflow soldering oven, i.e. the type of soldering that allows you to obtain quality assembled PCBs with a stencil and...

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