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 Bike tail LED light flashing

Friday, July 12th, 2013

This is a bike tail LED light flashing as the planet Bike Blinky Safety. When we use the bicycle(normal bike) at night. we used IC1 IC555 Oscillator signal is output to a lot LED super bright. Present roads in good condition than the former roads, the traffic is convenient. But often car ran high speeds. […]

 Simple 4 digits stopwatch circuit.

Friday, July 12th, 2013

This simple 4 digits stopwatch circuit for counter number down to zero as dynamic drive LED segment. Use a package IC-Cmos TC5001P or 74C926 is main and 5-6v dc supply. The concept. We use a package-IC number is TC 5001 P (Toshiba) or No. 74C926(NS) as main. Both are CMOS-IC has the 4 digit counter […]

 CD4046 datasheet (phase-locked loop)

Thursday, July 11th, 2013

The CD4046 is Phase-locked loop IC of CMOS digital (combined analog and digital chip). A Phase-locked loop(PLL) has a voltage-controlled oscillator(VCO). The VCO signal and an input signal are sent vto a phase comparator which generates an error voltage part to any difference in frequency between two signals. The error voltage adjusts the VCO frequency […]

 Time based clock generator using crystal for digital

Saturday, July 6th, 2013

This is a clock generator that high accuracy, in square ware as time base for various digital circuits, by MM5369,CD4017 and crystal. Which output are 60Hz,1Hz and 1/60Hz. How this circuit works As circuit is shown in Figure 1 The output frequencies have feature for 60 Hertz, 1 Hertz and 1/60 Hertz. Which convenient for […]

 Automatic ni-mh battery charger can make by yourself

Tuesday, July 2nd, 2013

A nickel-metal hydride battery, also known as NiMH, is a secondary cell.They are used in cameras and other electronic devices. They are widely used Because it’s cheap and has a flow rate capacity of the cells to be used as required. Can replace the generic battery immediately. Important. Can bring to new charging hundreds to […]

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