Free electronic circuit design and schematic diagram
Usually, when an high heating of the application environment is occurred due to the power dissipation, we use high current linear solution to solve that problem. But, we can solve that problem using Adjustable 1.5A Step Down 1.5 MHz Switching Regulator circuit. This circuit use ST1S03 step down DC-DC converter. The ST1S03 can also used for powering low-voltage digital core […]
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We can use SSL3250A (an asynchronous boost photo flash dual LED driver) for mobile application. This device ensure a lot of implementation possibilities because it has wide input voltage range and the large maximum output current at a wide output voltage range. It has long battery life and low power strain because of it’s high efficiency and soft-start. This device […]
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This is a Light position controller circuit. Light position controller is a monolithic integrated circuit which is used in passenger cars. Potentiometer on the dashboard is used to define the light beam’s elevation of the head light of the car to a state by the car driver. Here is the circuit: This circuit has some features, they are Thermally protected, […]
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This is a driver circuit for siren. This circuit usually used for car alarms. To build this circuit, we use VD-MOS FETs. This circuit receives 12 v supply from battery. A microprocessor sends complementary pulse waveforms to the driver circuit as inputs. Here is the circuit : This circuit uses two PHC21025 which each of them contains two FETs. Two […]
Read moreThis is a measuring resonance of very low frequency (vlf). This video shows an easy way to measure the resonance for coil on very low frequency. The frequency range is between 5kHz-30kHz. this video also provides the circuit that is used to measure the resonance of the coil. On this video, to measure the resonance of VLF coil, the 370ohm […]
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On telecom applications, the MAX1637 is a popular device. This device offer a lot of advantages such as PWM operation, small size, high MOSFET-drive capability, wide VIN and VOUT ranges, and excellent protection against over- and under-voltage faults. An auto-retry controller that attempts to restart the system is often needed in telecom application. Here’s the circuit diagram: Undervoltage is related […]
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STANDBY/ON switch below is appropriate for applications (industrial and telecom, for example) in which the circuitry must remember its state (STANDBY or ON) after a power failure that occurs when there is no operator. Because the state can be lost if leakage current drains the battery, we can not just rely on an alternative approach based on battery (or supercapacitor) […]
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