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,…
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…
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…
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…
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…
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…
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…
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…
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…
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…
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…
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…
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…
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…
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…
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…
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…
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…
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…