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, [...]
This circuit is power supply circuit, again the circuit that have the merit is if we want dc voltage 12V but , we have 6 volt only the circuit can modify DC voltage 6 Volt be 12VDC get.
The principle works of the circuit is Q1, Q2, R1, R2, R3, R4, R5, D1, C1 and C2 [...]
Using relay general the majority then to use power supply that have DC Voltage with the value volt that specify on relay. For relay work but , if , we have no power supply that want to feed give relay. This circuit helps to give relay can work.
From the circuit uses two power supply from [...]
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