03:08
SAW filters from TV and cell phone. How it works
01:38
Zener diode for transistor in transmitter power amplifier
05:33
How to measure radio transmitter output power using an oscilloscope
07:07
RF generator on one transistor RD15HVF1. Lamps shine in hands
02:53
Electromagnetic field detector
04:32
What is the difference between MOSFET and JFET transistors
02:50
Load switching with two buttons. Made using optocouplers
04:04
These PIC microcontrollers are no longer useful to me. Why?
02:26
555 IC Voltage Alarm
02:34
TV with vacuum tubes
02:37
Voltage converter from 1.2V from a Wireless Computer Mouse.Chip 2108A
05:55
SPD chip in RAM. What happens if you remove it?
03:46
GVDA GD189.Finds radiation from radio transmitter and telephone
03:00
ICS501M.This is a frequency multiplier chip up to 160MHz
04:35
Andonstar ad409pro.Digital microscope with video endoscope and wi-fi video transmission
03:00
How to make a flyback converter correctly
03:02
Synchronous rectifier or Schottky diode Which one is more efficient
01:30
RF probe on diodes for testing walkie talkies
01:42
How to transmit sound using a carbon microphone
01:38
Reverse engineering of a high voltage generator using a single transistor
01:30
Electric brake for electric motor on relay and button
02:47
How to make a short dual-band antenna for a walkie-talkie
02:48
How to make an antenna LC- filter and get rid of interference
03:26
PAM8403. D-class audio amplifier. How to make an LC filter for it
04:13
Vacuum fluorescent display. How to check it with a battery
01:42
How to make an adjustable power supply from a charger
02:40
What are quartz watches made of
02:42
DSB radio transmitter at 27 MHz on sa612a chip
03:14
Battery capacity tester HW 586
02:31
800 MHz radio transmitter from a VCR modulator on a cxa1733m chip
06:57
Multimeter with oscilloscope Tooltop et828pro.Checking operation
04:04
Antenna BALUN.How to make a transformer for a short wave antenna
02:34
USB battery tester KWS-V20 with a measurement error of about 3%
03:13
LC low pass filter on green ferrite rings
01:39
delay line in electronics. How it works
05:55
Fnirsi swm-10.Portable spot welding. Checking operation
03:02
How to make a fluorescent light from a monitor inverter board
02:53
How to test wireless charger
03:55
Heat pipe from a computer. How it works
04:04
FM transmitter on a dual-gate MOSFET BF966
02:33
AM transmitter made from a homemade zinc oxide semiconductor
00:52
Why do you need a โballโ in a fuse
01:43
Why is one turn of foil needed on a transformer?
02:02
Why do they make a "snake" conductor on the PCB
04:23
In-phase and anti-phase connection of transformer windings
06:11
XGecu T48 programmer. How to program tens of thousands of chips and test logic chips
02:15
What is the spring in the fuse used for
01:47
SIM card under a microscope. What is inside
03:11
How to make a Levitron on a Hall sensor
03:43
How does a Hall sensor work
02:20
A simple laser level made from a laser pointer and a printer laser unit
02:04
Electricity generator from a stepper motor
02:27
Why connect the coil to the antenna
02:02
How does a barcode scanner work
02:10
What can be seen with an ultraviolet LED
01:40
A high-voltage fluorescent lamp shines from a Baofeng UV82 walkie-talkie
02:31
How to Easily Increase the Range of Baofeng Walkie Talkie
02:57
What does a drone consist of
08:07
Super RM RockMite QRP transceiver.How to assemble and configure
03:53
Bside s30 multimeter with li-ion and infrared temperature sensor