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Simple file knife

Simple file knife

On the flea market I found an old file and decided to make a knife out of it. I had no desire to betray it with heat treatment or to grind the blade for hours. Therefore, with minimal processing, I kept the temperature of the blade cold at all times. …

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Simple antenna amplifier

Simple antenna amplifier

The more I get to know the modern element base, the more I’m surprised at how easy it is to make such electronic devices, which you could only dream of earlier. For example, the antenna amplifier, which will be discussed, has an operating frequency range from 50 MHz to 4000 …

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A simple homemade forge horn

A simple homemade forge horn

Hello mankind, today I will tell you how to make a forge horn with a temperature of up to 1100 degrees Celsius. In the smithy forge is used for heating the metal before forging, cementing and other heat treatment operations. When working with metal, it is almost always necessary. The …

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Simple FM receiver on a chip

Simple FM receiver on a chip

Just one chip is needed for you to build a simple and high-grade FM receiver that can receive radio stations in the range of 75-120 MHz. FM receiver contains a minimum of details, and its adjustment, after assembly, is minimized. It also has good sensitivity for receiving FM VHF radio …

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