Counter Circuits
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%2Bwith%2Banimation%2Bsimulation%2Bcircuit.png "Johnson digital counter circuit diagram using D flip flop 7474 (3 bit/4 bit) with animation/ simulation")
The Johnson digital counter or Twisted Ring Counteris a synchronous shift register with feedback from the inverted output (Q`) of the last flip-flop. Q` of the last flip flop is connected back to the input D of the first flip-flop. This inversion of Q before.... -
Digital counters have several applications in electronics circuits. Counters in digital electronics are used at different situations. Here we are going to deliver the idea of aRing counter circuit, which is a register counter. Working animation and circuit.... -
Here we are going to discuss about an Asynchronous 4 Bit Binary Up Counter, a circuit made up of several J-K flip-flops cascaded to generate four bits counting sequence. An up counter is basically a digital counting circuit which counts up in an incremental.... -
A simple seven/7 segment counter circuit with an LED display. This counter circuit diagram is designed using IC CD 4033 as counter,555 Timer IC and seven segment LED Display LT 543.... -
Simple frequency meter or frequency counter circuit with LCD display and Avr micro controller.DIY schematic circuit diagram & embedded c code.... -
The number of the pulses of the input can be confirmed by seeing it with the eyes by putting the light-emitting diode to the output of the counter .... -
The following circuit shows about 40 MHZ/400 MHZ Frequency Counter Circuit Diagram. This circuit based on the PIC16F84 IC. Features: with .... -
The frequency measurement is one of the most important things in radio construction. Without it you will be unable to set desired frequency in your receiver (and in transmitter too!), without it you will be unable to monitor frequency drifts etc. Sometimes,.... -
The TA2003PG TA2003FG are AM / FM Radio IC (FM F / E+AM / FM IF) which are designed for AM / FM Radios Combining with the TA7368P (Mono PW IC), a suitable AM / FM Radio system is able to be constituted. By Toshiba Semiconductor .. -
This calculator computes the resistors and capacitors for a NE555 timer chip, which has been configured as a astable multivibrator (oscillator), or square wave generator. Just enter in the duty cycle and the frequency and the calculator will compute.... -
This circuit uses a saw based oscillator with an output amplifier which drives a transistor. C1 and C2 and L1 are critical oscillator components. They form a tank circuit which should be tuned to the resonator frequency. Typically C1
This circuit was taken from a remote control tarantula transmitter operating at 49. 86MHz. The schematic can also be found at the FCC web site, if you look up the FCC ID. This operates under Part 15. 235 of the FCC rules and regulations Do you need help with....
This is a very useful RF attenuator circuit which works from 300KHz to the 3GHz range based on the quad PIN diode array HSMP-3816 from Avego. The lower PIN diodes are biased at 1mA which gives about a 40 to 70 ohm impedance. R5 can be increased to increase....
This circuit allows a smaller control voltage to inversely linearly control a larger output voltage Vo. Another feature is that Vsp the supply to the op-amps can be lower than the output voltage so in theory this circuit could control a output voltage of any....
The disadvantage of the circuit above is that the supply of the op-amp is tied to the HV supply. Most op-amps are limited to around 30V on the supply, so the circuit wont work for higher output voltages. The circuit below avoids this this problem by....
Where VD is the voltage drop across the diode, and VTrans is the voltage drop across the transistor. Note that the continuous/discontinuous boundary occurs when io is zero. The main question when designing a converter is what sort of inductor should be used.....
This circuit uses a synthesized sound chip from Holtek, the HT-2811. This reproduces the sound of a ""ding-dong"" chiming doorbell. Additionally, the circuit includes a CMOS 4026 counter display driver IC to count your visitors....
This circuit measures the distance covered during a walk. Hardware is located in a small box slipped in pants` pocket and the display is conceived in the following manner: the leftmost display D2 (the most significant digit) shows 0 to 9 Km. and its dot is....
This simple counter can be used to count pulses, as the basis for a customer counter (like you see at the doors of some stores), or for anything else that may be counted. The circuit accepts any TTL compatible logic signal, and can be expanded easily (see....
The material is presented in a manner suitable for a teaching tool. It seeks to enlighten and to spark off interest in the design of counters. As R. S. S Obermann remarks ". design of counters has, in my experience, always been an excellent proving ground....
The Muntz one-tube design can be considerably improved by adding an audio preamplifier stage. This will give improved sensitivity, and thus give full modulation with lower-level signal sources (such as some older CD players, ceramic phono cartridge, etc. ).....
The AS3636 is a highly integrated Photoflash charger including IGBT driver, inductive DCDC boost autofocus/ video LED driver, an indicator LED driver and it includes system level ESD protection and a ....
Attached schematic diagram is a Johnson Counter. Would you pls advise while ""Loop 2"" is considered to be INVALID? Also, pls suggest few....
This circuit measures the distance covered during a walk. Hardware is located in a small box slipped in pants` pocket and the display is conceived in the following manner: the leftmost display D2 (the most significant digit) shows 0 to 9 Km. and its dot is....
The recent tsunami in Japan and the on-going calamity with the Fukushima nuclear power plant has apparently greatly increased sales of radiation meters, n....
The circuit described here counts the number of times that an infrared beam is interrupted. It could be used to count the number of people entering a room, for instance, or how often a ball or another object passes through an opening (handy for playing....
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....
New Circuits
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This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of.... -
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is.... -
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to.... -
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This.... -
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the.... -
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,.... -
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the.... -
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power.... -
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
Popular Circuits
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This alarm can be very useful in a room or an area that should normally have no movement at all...
This is a collection of various useful and interesting schematics. Some of these are also...
In 2011, designing a frequency converter circuit consists in most cases of picking out an IC that...
This is a simple touch switch circuit, the 555 timer is configured as a one shot multivibrator...
1B32 application circuit with multiple pressure sensor shown in Fig. Excitation power through...
As shown in FIG constituted by MAX639 + 5V fixed output buck power conversion. MAX639 is a...