Free Simple Circuit Diagram
This is a discrete high current switch mode LED driver circuit. The basics of this circuit is a buck-converter principle. The efficiency of this circuit is 80 to 90 %. This circuit can be applied on automotive lighting applications. The advantages of this circuit are low component and low cost. Here is the circuit: The voltage input range of this […]
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This is a wide input-voltage range high-power LED driver circuit. This circuit based on a buck/boost converter controller regulates current to a white LED. This circuit can be used to replace incandescent bulbs, it efficiently match the LEDs to available power sources such as electrical systems car, batteries, etc. It also can used to control and regulate the LED output […]
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This is a driver circuit for nixie tube. This circuit uses 2N3684 as nixie tube drivers because its Vp is 2-5 volts which is ideally matches TTL-DTL logic level. Compared with bipolar transistor, the JFET is immune to almost all of the failure mechanism found in bipolar transistor. Here is the circuit : To prevent breakdown of the JFETs, this […]
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This is a status panel driver circuit. This circuit is used to turn on lamps or LEDs in a graphic panel that represent faults, action, and status of an industrial machine. This circuit has advantages compared with other graphic status panel. It is more economical than computer graphic display and the communication between machine status and operator faster than other […]
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