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Laser Diode: The Ultimate Beginner’s Guide
A laser diode is a cool component that you can do a lot of fun stuff with, from engraving wood to creating a light show or giving your robot eyes! They range from super cheap (or even free if you can find one in an old CD player!) to more expensiv...
Repair of broken line of instrument head moving coil
Current meter, voltmeter and other AC and DC pointer instruments are common measuring tools for electrical equipment such as motors. Once the moving coil of the gauge head is broken, the pointer loses power and the measurement cannot be ...
Using batteries to judge ordinary thyristors
Take four 1.5V batteries in series, tap at 1.5V, and connect the S.E1 positive to the anode of V S through the lamp HL. The E2 negative to the cathode of VT. Close S, and HL will not go out. Because the bulb has a small resistance value, the curre...
Smart Measurement of Small Capacitor with Composite Tube
Use the radio to locate underground cables
Underground cable is a buried power supply line, if damaged, it will directly affect the normal use of electricity. Generally speaking, several cores of a cable are not damaged at the same time. Therefore, one of them can be used to grou...
Checking bidirectional thyristor with digital multimeter
The left figure is a diagram using a digital multimeter. Dial it to NPN file, open the G-pole of the bidirectional thyristor VT, connect the G-pole of the bidirectional thyristor to the "C" hole of the hFE socket through the current-limiting resi...
Judging ordinary thyristor by power supply
Take a rectifier diode VD, a resistance (5005W) and a lamp EL (220V, 8-15W). After connecting according to the diagram, switch on the power supply and the lamp should not be on. Multimedia (R) × 10 or R × 100) The black-watch pen is connected to t...
0~284V voltage obtained by series connection of two voltage regulators
As shown in the figure, 0~284V voltage can be obtained by using two voltage regulators TAl and TA2 in series. Connect the X1 and X2 of the two voltage regulators with a single wire and connect the power zero line N. Indirect 220V power s...
Obtain 0-433V voltage with three regulator star connections
As shown in the figure, by connecting three regulators TA1, TA2, TA3 into star connection, the voltage regulation range can be expanded and 433V voltage can be obtained. Connect the X1, X2, X3 terminals of the three regulators, A1, A2, A...
Determining Ground Leakage Fault Point with Clamp Current Meter
It is difficult to find out the specific grounding fault point when grounding leakage occurs in distribution lines or motor control equipment. The method to determine the leakage grounding fault with a clamp current meter does not requir...
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