This is versatile digital counter circuit, that as a cheap due to basic components you can buy in many electronic shop. My friend said the some circuits that price same this circuit may be not worth it. You can apply too much model as you want with special feature of this circuit following.
1.A count up or count down the time.
2. Can connect output to a 7 segment LED both a Cathode common or Anode common.
3. Can store a collection of information
4. Can set number counting in advance.
In circuit as figure 1 is shown normal operation, by set the circuit are 2 main, that if we want more than this, it can be connected together to added unlimited.
The heart of the circuit is composed of 2 parts.
1. A decoder and drive LED display.
2. The counter number on the Binary Code Decimal Output that use IC2-CD4510
Logic probe is useful tool to measure, in a check digital circuits. As a meter, which is used to measure power in electrical circuits. Logic probe was used for detection logic “1″ and “0″ or pulse in a digital circuit. It has a handle. At the head of a pin, for measuring different parts of the circuits, or IC pin. At handle has a state of the LED display, as a “1″ or “0″ or pulse. Before use, to connect the two wires to pinch the power supply. To power the internal circuitry. Can be used with TTL and CMOS.
I compiled the logic probe types, You can create it yourself is not hard to follow.
Temple three state logic ic CD4001
The work of the circuit be the circuit will use not gate IC in show supervision. In case of still have no input signal come in be liberate input pin of IC1/1 float keep. Which make have impedance very many, which have no LED anything shine come out.
Read more source: Logic probe circuit
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We are experimental to create a simple counter circuit today, is a 2-bit binary counters.
Which consists of the gate and flip-flop both of TTL-IC type. We use the ICs are NAND Gate number: SN7400N and the flip-flop No: SN7473N, which consists of JK-FF two pieces. We use only one at a time, so can try it on the counter.
- Build circuit as Figure 1. The NAND Gate 2 pieces in IC-SN7400N connect as RS-FF(a flip-flop) for one pulse when we press switch one time.
For JK-FF both in the IC-SN7473N that, We will use as T-FF , with connections pin J, K and CLR pin as marked “1″, and then pin CLR(Clear) is the flip-flop reset pin to output Q in the “0” status with Do not sign up with my JK and CK.Continue Reading »
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0-99 counter by IC 4017×2 When you want the counter circuit since 0 arrive at 99. I thinks this circuit may on the same wave length you certainly. it uses IC LM4017 decade counter/divider follow circuit picture. When feed a signal clock at 14 pin cause the position logic at a pin output. From 0 to 99 for switch S1Continue Reading »
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Lamp Flasher by 2N2907 Bipolar Transistor I has evered to play the leading role Lamp Flasher Circuit with the integrated circuit. Which be the circuit that is simple but at this time a friend someone complain to come to that want the circuit that use the transistor. I then lead this circuit has come to in rows think to you. ByContinue Reading »