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Electronic circuits, radio components, microcontrollers, amplifiers and more

Read more about the article Retekess tr111.Radio receiver with bluetooth control. Radio scanner 30-200 MHz
Radio receiver

Retekess tr111.Radio receiver with bluetooth control. Radio scanner 30-200 MHz

The Retekess company has released a new radio receiver, Retekess tr111. This radio receiver can be controlled from your smartphone. Here are its characteristics: Brand: RetekessSpecial Feature: Bluetooth, APP Control, SOS, Rechargeable,…

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25.09.2023
Read more about the article Unknown electronic components
Unknown electronic components

Unknown electronic components

smd chip 9A1LZ BDGCFA chip LED driver Chip HC2015,HC2020

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12.09.2023
Read more about the article What is Rds MOSFET. How to find out this parameter
How radio components and circuits work

What is Rds MOSFET. How to find out this parameter

Datasheets for MOSFET transistors indicate such a parameter as RDS. This is one of the main parameters of the transistor and it shows the resistance of a fully open drain-source…

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11.09.2023
Read more about the article Electronics for spare parts.September 10th
Electronics for spare parts

Electronics for spare parts.September 10th

For spare parts today, the board from the electrolux hob and the panasonic th42pv8 plasma TV will go On the board from electrolux kite 387 4371 00 rev.b there is…

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10.09.2023
Read more about the article How to make a plasma lighter and taser from an old image scanner
Electronic DIY

How to make a plasma lighter and taser from an old image scanner

In old image scanners there is a voltage converter for a fluorescent lamp.This lamp highlights the image when it is being scanned.In more modern scanners, LEDs are already used for…

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08.09.2023
Read more about the article Why connect three capacitors to an electric motor
How radio components and circuits work

Why connect three capacitors to an electric motor

In radio-controlled models, you can see that three capacitors are connected to the electric motor.One capacitor is parallel to the power supply, and the other two are from the power…

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07.09.2023
Read more about the article How to make a simple mechanical TV
Electronic DIY

How to make a simple mechanical TV

In this article I will tell you how to make a simple mechanical TV, with simple electrical control circuits.This "TV" will show simple images.If you want to make a high-quality…

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06.09.2023
Read more about the article Bside u6 digital clamp meter fork professional.Review
Electrical measuring instruments

Bside u6 digital clamp meter fork professional.Review

In the review, there are current pliers with the BSIDE U6 multimeter function.With this tool, you will be able to measure AC and DC current in a contactless way, measure…

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31.08.2023
Read more about the article DT71 mini digital tweezer smart SMD tester.Review
Electrical measuring instruments

DT71 mini digital tweezer smart SMD tester.Review

With this DT71 digital tweezers you will be able to measure voltage, resistance,inductance,capacitance, frequency, check diodes.There is also a built-in generator of various signals and there is also an automatic…

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30.08.2023
Read more about the article Variable capacitor.How it works and how to check it
Electronics components

Variable capacitor.How it works and how to check it

Variable capacitors were used in radio receivers to tune into radio stations.As a rule, an inductor was connected to the capacitor, and by changing the capacitance of the capacitor, we…

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28.08.2023
Read more about the article A capacitor for the switch so that the contacts do not spark.RC Circuit
How radio components and circuits work

A capacitor for the switch so that the contacts do not spark.RC Circuit

Recently, while disassembling an old DVD player, I discovered that a 220 V power switch is connected in parallel to a 10 Nf capacitor with a voltage of 2 kV.Why…

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26.08.2023
Read more about the article DIY inter-turn short circuit tester
Electronic DIY

DIY inter-turn short circuit tester

This tester will give a signal if there is a short circuit in the inductor between the turns, even if it is one turn.The device is assembled on 5 C1815GR…

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24.08.2023
Read more about the article PAW3601DH.Laser mouse tracker system.Datasheet
Other chip

PAW3601DH.Laser mouse tracker system.Datasheet

PAW3601DH is a CMOS laser mouse sensor with DSP integration chip that serves as a non-mechanical motion estimation engine for implementing a computer mouse. The chip 10330045100-с is located in…

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10.08.2023
Read more about the article Sound amplifier class D on timer 555
Audio amplifiers and other audio chip

Sound amplifier class D on timer 555

This unusual Class D amplifier is assembled on a 555 chip, which is not designed to work as a low-frequency amplifier at all.To make a Class D amplifier, you need…

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29.06.2023
Read more about the article Smart speed controller for PCB
Electronic DIY

Smart speed controller for PCB

This device is useful for an electric motor that drills holes in printed circuit boards.As long as there is no load on the drill, the rotor will rotate slowly.When the…

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02.01.2023
Read more about the article LM386.Low voltage audio power amplifier.Datasheet
Audio amplifiers and other audio chip

LM386.Low voltage audio power amplifier.Datasheet

The LM386 is a power amplifier designed for use in low volt-age consumer applications. The gain is internally set to 20 to keep external part count low, but the addition…

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02.01.2023
Read more about the article How to assemble a 70W 1.8-30 MHz power amplifier
Radio transmitters, generators

How to assemble a 70W 1.8-30 MHz power amplifier

Today, KIT kits are sold on well-known websites under the name "USB linear power amplifier 70 watts for a frequency of 3.5-30 MHz".The power may still indicate 50 watts.I bought…

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02.01.2023
Read more about the article Power protection.4 function
Electronic DIY

Power protection.4 function

This device will protect against voltage reversal, short circuit, low voltage and high voltage.I applied the relay to 5 Volts.With a resistor of 140 ohms, it is necessary to set…

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23.12.2022
Read more about the article Remote infrared load control.Circuit
Electronic DIY

Remote infrared load control.Circuit

With this infrared remote control, it is possible to control the load from a distance.The control consists of a transmitter with a transmission frequency of 38 kHz and a receiver…

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29.11.2022
Read more about the article Lighting effects on the 74LS145 chip
Electronic DIY

Lighting effects on the 74LS145 chip

Lighting effects on four LEDs.The mode of their operation can be selected using the buttons.It can be the glow of LEDs sequentially or other effects.Made on a 7400 and 74ls145…

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01.11.2022
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