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Sunday 7 August 2011

NE555 Monostable

This is a monostable mode circuit of NE555 IC timer. Feature : timing period is 1.1msec, precision, Simple circuitry, independent output duration, 12V supply. Component : Resistor, capacitor, NE555 timer IC. [zen22142.zen.co.uk]

Thursday 4 August 2011

Basic 555 Squarewave Oscillator


The following circuit is a Basic 555 squarewave oscillator. Feature : 1 Khz tone, Simple circuitry, limit = 200 mA, inductive voltage reduced, 4.5-9 Supply voltage. Component : 555 timer IC, resistor, capacitor, Speaker, 2N3053 transistor, push button. [qsl.net]

Bicycle back Safety Light

This is a circuit of bicycle back safety light. Feature : 13 LEDs flashing, 3V supply voltage, Simple circuitry, low voltage, high efficiency, battery powered. Component : Resistor, capacitor, LED, switch, battery, 7555 timer IC. [redcircuits.com]