Free Simple Circuit Diagram
This is a simple JFET pierce crystal oscillator. We can use a wide frequency range of crystal using this circuit without circuit modification. Here is the circuit : This circuit uses Q, 2N3823, that is maintained thus insuring good stability of frequency because the crystal does not loaded by the JFET. [Source: National Semiconductor Application Note]
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This circuit is an example of a set/reset flip flop. Set/reset flip flop is the simplest flip flop. This circuit using discrete components. Here is the schematic diagram : When this circuit obtain the power, only one of the transistors will conduct that causing the other components to remain off. This transistor can be turned off by grounding it’s base […]
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This is the simplest circuit that mains powered light bulb to flash. To build this circuit we do not need a much money. This circuit can be used in small parties and similar occasions. This circuit is made by wiring a fluorescent lamp starter and a normal light bulb in series. So the light bulb will flash on and off […]
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This is a light dimmer circuit. It has no fancy special feature, it is a a quite typical TRIAC based dimmer circuit. This circuit is only used to operate with non-inductive loads like standard light bulbs. Compared with the 120V AC above design, the triggering circuit is little bit improved. Besides that, this circuit is used to dim ligth bulb […]
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