Free electronic circuit design and schematic diagram
This motor driver circuit control the charging and power delivery cycles to enable small solar cell to drive dc motor. Here is the schematic diagram of the circuit: You have to make sure that 4700uF cap doesn’t leak, for more information about this solar cell dc motor driver circuit, you can see here.
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This motor driver deliver the power form capacitor to the motor when the capacitor is charged to 1.75V by the solar cell. After powering the motor, capacitor voltage will be discharged and the circuit will cut the capacitor-motor connection when the voltage drops below 1V, allowing the capacitor to be charged to 1.75V again to repeat the cycles. The motor […]
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This driver circuit is not only boost the voltage to enable a single battery cell to power two red LEDs or one white LED, but also regulate the current so the light will be constant until the battery runs out its power. The main component of this single cell LED driver is transistors and ferrite core transformer. You can visit […]
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This is a ADP1821 Step Down DC-to-DC Converter circuit. This circuit uses ADP1821 that is synchronous pulse-width-modulated (PWM), step-down controller, inexpensive and versatile. It can drive all N-channel power stage to regulate an output voltage as low as 0.6 V. The output voltages that can be provided by this circuit is from 0.6 V to 85% of the input voltage. […]
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The load inrush current is limited by the TPS2331. The system also protected by TPS2331 from a load fault in its traditional tole as a hot-swap controller. However, the TPS231 must protect the system against a power supply module fault in an OR-ing circuit. The TPS2331 is required by the former role to trip if excessive current flows into the […]
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This bench power supply circuit is suitable for your electronic experiment lab. This circuit can be built no on a piece of copper-laminate. The Bench Power Supply was designed to use old lantern batteries, “D”, and “C”. This circuit can produce at least 12v -14v from old batteries and cells. As a heat-sink, this circuit uses a board. To connect […]
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The benefit of stepping down the voltage of the battery is that we can give a constant/stable performance for our devices until the battery runs out the power. That’s only one example of voltage regulation, actually there can be more advantage depends on your need. Here is one example of voltage regulator circuit constructed from discrete components: This is a […]
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