Making a charger for a screwdriver with your own hands
A screwdriver is one of the most versatile power tools. Many people have seen this from their own experience.
What should be the internal resistance of the ammeter?
Answer According to Ohm's law, the current in a closed loop is equal to the algebraic sum of the emf acting in
How to charge your car battery if you find yourself without a charger
Any motorist may find himself in such conditions when the car battery suddenly stops working, and
EMF measurement circuits
Measurement of voltage, current, resistance, capacitance, inductance, power in electrical circuits
U = E – IRin If there are no requirements for high accuracy of EMF measurement, then
Straight spline
Crosses without toes or how the Phillips cross slot appeared
Prerequisites for the emergence of a new profile for threaded fasteners In the early thirties of the 20th century
Educational program on Phillips screwdrivers: PH and PZ slots - what's the difference?
Everyone knows the Phillips screwdriver. Many people know that they differ in size, and if the size
Operating principle of pressure sensors: diagram, device, application
Precision measuring instruments are an important component of the activities of all modern sectors of the economy. They serve for
How to disassemble and repair a phone charger
How to choose a phone charger and make it yourself
Operating principle Mains-powered adapters in the vast majority of cases operate on a pulsed basis.
Voltage indicators above 1000 V, use of UVN
Voltage indicators above 1000 V (UVN) react to capacitive current that flows through the indicator
Selecting a 18650 battery and its characteristics
Polarity of 18650 battery Li-ion batteries 18650, 14500, etc. looks very similar to
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