Regulated power supply on LM317 voltage regulator

A beginner amateur radio operator simply cannot do without at least a simple power supply. When developing or customizing a device, a regulated power supply is an indispensable attribute. But if you are a beginner amateur radio enthusiast and can not afford an expensive tricked-out power supply, then this article will help you fill your …

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Camping candle

Anyone who is engaged in tourism, fishing, or hunting has probably already found a lot of different ways to get fire to make a fire. But when camping, you need to be ready for any turn of events and quick changes in camping conditions. To warm up from a sudden frost or disperse the deafening …

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Collapsible fishing pole

It is important for every fisherman or tourist to have not only reliable but also comfortable camping equipment. Especially helps various kinds of folding devices. There is a very original design sucker for catching fish, which is not inferior to expensive devices, it is convenient, lightweight and easy to use. And the main thing is …

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Phytolamp

There is a lot of debate about the effectiveness of LED-based phytolamps. It is desirable to have an artificial source of light useful to plants for growing seedlings in poorly lit areas. To test the effect of phytolamp on plants, it is not necessary to buy it, but can be made with your own hands. …

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