Free electronic circuit design and schematic diagram
Low efficiency and heat generation are the two biggest shortcomings of using linear regulators versus switching regulators for applications with high input/output voltage difference. These two things is used to prevent the usage of linear devices in many applications, specially in those with low power consumption requirements. However, the option of using linear LED drivers to address backlighting applications does […]
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This is simple 2N3055 Variable power supply circuit. This circuit has some advantages such as it it can deliver an output voltage between 1,5 V and 15 V with a 500 mA maximum current and low production cost. If the current consumption do not exceed 350 mA, the circuit has stabilization of better than 2%. Here is the circuit: The […]
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This is a simple 220V power interface circuit. This circuit used as interface for monitoring electric devices and equipments using a computer. The circuit only senses whether the device being monitored is turned off or on. The galvanic isolation between the AC main line being monitored and the interface to the computer is an important aspect of the circuit. We […]
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This is Resonant Mode LED Driver circuit. This circuit is used to give a constant DC current through a string of a given number of LEDs. This circuit uses flyback, boost, or buck topology. Each of them has disadvantages and advantages depending on the number of LEDs being driven in series, the LED output current, if dimming is required, if […]
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Figure below shows us a PWM Speed DC Motor Rotation circuit. This circuit has two functions, Forward-Reverse and Regenerative Braking function. On this circuit, we can control the speed of DC 12V motor with Power Mosfet IRF150 using a signal PWM. The Relay RY1 work as control Reverse with the digital alarm, change Q10. The Relay RY2 work as function […]
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The circuit diagram below shows a constant amplitude triangular-wave generator. A variable frequency triangular wave whose amplitude is independent of frequency is provided by this circuit. As a reset circuit, the generator embodies an integrator as a ramp generator and a threshold detector with hysteresis. There is no further explanation is needed because the integrator has been described in a […]
Read moreThis is a video tutorial about milling PCB using Altium Designer. This video tutorial shows step by step how to milling the PCB using Altium Designer. The Altium Designer can be used to milling PCB automatically. First, we must provide the circuit, then use the scripting system provided in Altium. Then choose the script and run it. Then export the […]
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