Free electronic circuit design and schematic diagram
This is how to make crystal radio part 3. In this video, a explanation of the variant of crystal radio is shown. This is two part radio. This radio has two wires, they are antenna and earthing wires. And between two of them there is a diode. The diode is used as bridge between that two connection. The earphone is […]
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This is a circuit of the open loop PWM controller using the NE5560. This controller is suitable for Switched mode motor drive. To get the best dynamic response, the switched-mode controller must be set consider to the motor electrical time constant and starting current. The motor has a peak current that must be carried by the transistor. Here is the […]
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A differential current sensing that is inserted inside a H bridge circuit. is shown in the schematic diagram below. This circuit is one example of AD8205 application. The AD8205 measures current in both directions as the motor changes direction and H-bridge switches. This circuit has high accuracy in current measurement because AD8205 is placed in the middle of the H-bridge. […]
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Sometimes, there are unexpected solenoid and excessive corrosion occurs on current sense circuit. Corrosive effects can be occurred because of the differential voltage between the ground and the load. To reduce that possibility, the shunt and the switch are placed on the high side. When switch is off, the battery is removed from the load, it will avoid damage from […]
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An AD8205 can be used to make a high-side current sense with a low side switch. Besides AD8205, an inductive load (solenoid) and a resistive shunt are added in this circuit. The resistive shunt is placed on high-side and the switch is placed on low-side, so that all current measurements, including the the re-circulation current, can be done because when […]
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This is Powerline Audio Transmission circuit using LM1893. This circuit uses LM1893 that is designed to allow analog data reception and transmission. The carrier is modulated by base-band audio-bandwidth signals FM passing through the tuned transformer onto the power line. The receiver PLL will demodulates the modulated carrier linearly. Here is the schematic diagram of the circuit: External audio amplification […]
Read moreThis is Energy Efficient Light Bulb Comparison video. This video shows the comparison energy used of three kinds of Light Bulb. Light Bulb that are compared in this video are standard Light Bulb, Compact Fluorescent Lamp, and LED light bulb. In this video, the power of three kinds Light Bulb are compared by multiplying the voltage with the current. To […]
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