This is an electrical circuit protection device sound disappeared, when too much voltage 220V, and protection, when pressure is too low with Using the relay cut off power when voltage problems.
From the circuit when the voltage is 220 volts AC through a transformer T1. It serves to reduce the pressure remaining 12 volts, through a [...]
This is a challenge contest circuit sensitivity, in press. Can be played simultaneously by up to 4 people on one hit before, there are bright lights show the number of people who are pressing.
When raising the power supply circuit, and switch to either one up.Suppose that the first switch S1, a current will flow through [...]
This is a circuit for DC motor circuit. This circuit is used PWM speed control using 555 timer IC. This is the figure of the circuit. The 555 Ic is wired as an astable and the frequency is constant and independent of the duty cycle, as the total resistance (R charge + R discharge, [...]
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