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Posts Tagged ‘switch’

Relay Type Switch Circuit Test in High-Voltage Impulse Generator

Thursday, October 1st, 2009

This kind of impulse generator simulates transient overvoltages on residential or industrial low-voltages AC power circuits. And the following picture diagrams basic schematic circuit of the tester for high-voltage impulse generator in the relay type switch with resonant circuit.

Driving White LED with LM3354 Switched Capacitor Voltage Regulator Circuits

Wednesday, July 1st, 2009

LM3354 is a switched capacitor DC/DC converters that can be programmed for an output of 4.1V, which is an ideal voltage on driving white LED applications such a color LCD display in cellular phones, PDAs, and handheld computers.

NPN Transistor 2N3904 Datasheet for General Purposes

Wednesday, May 20th, 2009

Bipolar transistors are typically used as an electronic switch and the brace on a series of digital electronics. Transistor  has 3 terminal. They can be combined NPN or PNP type that becomes a single transistor as three feet. NPN transistor 2N3904 is a general purpose amplifier (can make the audio can also create amplifiing voltage).
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