So we need a clock source to keep this IC ticking, this clock source can be a simple Timer circuit that could generate pulse or a microcontroller like Arduino, PIC, etc. This IC will increment the count from 0 to 9 (Q0 to Q9) each time it senses a high pulse from the clock pin (pin 14). We have 10 output pins ranging from Q0 to Q9, these pins can be connected to any load but we are using LEDs here as shown in the circuit below. The IC can work from 3V to 15V, but normally powered with +5V to the Vdd/Vcc pin and the Ground/Vss pin is connected to ground. This is commonly used for Led chasers and other logical output projects, so if you are looking for an sequential decoded counting IC that can count up to 10 then this IC will be your right choice It also has the capability to indicate the status of counting using Carry pin. The IC CD4017 is used for counting applications, it has the capability to turn on 10 outputs sequentially in a pre-defined time and reset the count or hold it when required. Note: Complete Technical Details can be found in the CD4017 datasheet given at the end of this page. Available in 16-pin PDIP, GDIP, PDSO packages.Wide supply voltage range from 3V to 15V, typically +5V.The counting happens when this clock pulse goes high, this pin is normally connected to 555 timer or other uC to produce a pulseĪs the name suggests this pin resets the count back to 1Ĭonnects to the supply voltage typically +5V This is an input which when made high will hold the count at the current state This pin goes high after the IC counts from 1 to 10. and 65: P19.These are the 10 output pins on which the counting occurs, they are not in order hence verify pin diagram above.and 61: Block diagram: Input Amplifier Modu.and 57: The manufacture by Soylis Papanasta.and 51: we will link the plug of expense wh. and 47: Construction 1) The stripboard layo.and 45: Circuit Description Circuit diagram.and 43: IC1 = TLE2141C Low noise,high volta.and 39: R3, R9 Not used R4 47K 1/4W Resisto.and 37: The preamp is powered by the same 6.and 31: The gain may be adjusted with the 1.and 21: P492 Pot plant water tester P493 Mu.and 17: P368 Fan control P369 DC Motor Cont.and 15: P325 Add-On Current Limiter for Pow.and 13: P271 Wiper Speed Control P272 Dome.and 7: P116 LED Flasher P117 Pilot Light P.and 5: P60 Hi-Fi Preamplifier P61 Notch Fi.But if this current decrases, the transistors are not heating so much, but the sound gets worse. As this current incrases, the sound of the amplifier gets better, but the end transistors are more heating. This current can be regulated with the 500ohm trimmer resistor. this is a class B amplifier, this means, that a current must flow through the end transistors, even if there is no signal on the input. capacitor C2 regulates the higher frequencies (treble), as the capacitance grows, the higher frequencies are getting quiter. Some comments: - capacitor C1 regulates the low frequencies (bass), as the capacitance grows, the low frequncies are getting louder. The and transistors can be any NPN type power transistor, but do not use Darlington types. As you can see, in this design the components have a big tolerance, so you can build it almost of the components, which you find at home. The maximal input voltage is around 0.8 - 1V. The optimal supply voltage is around 50V, but this amp work from 30 to 60V. 2N3055 Power Amplifier Simple and low cost.
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