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Sequential Actuator for powering up to four devices
It is common that sometimes we need to power some devices σuccessively one after the other. This function forces us to handle a large number of switches, which are located where the access is difficult, especially in the case of informational devices and their pipelines. This sequential actuator ensures by itself the activation of one to four...
Zero sequence voltage phase protection circuit 2
Drawing, potentiometer RP for adjusting the operating voltage of the relay KA, ensure that the motor work normally when E KA does not operate reliably action phase failure occu
Pseudorandom Simulated Flicker Sequencer
The pseudorandom sequencer drives a solid-state relay. If you power a low-wattage lamp from the re
Using a 555 timer to drive a CMOS counter, this device uses RCA CA3079 zero-voltage switch to control triacs TR1 through
Light Chaser I
Up to 100 lights, LEDs, or optocoupler triac circuits can be sequentially activated by this circuit. One (Ul) 4017 decode co
Light Chaser Ii
Up to six lights can be sequentially flashed using this circuit. LED1 through LED6 can be replaced by optocouplers (MOC3010
Sequential Flasher Circuit
A 555 timer, IC1, drives a 4017 CMOS decade counter. Each of the 4017s first four outputs drives a CA3079 zero-voltage switch. Pin 9 of the CA3079 is used to inhibit output from pin 4, thereby disabling the string of pulses that the IC normally delivers. Those pulses occur every 8.3 ms, i.e., at a rate of 120 Hz. Each pulse has a width of...
Light Sequencer Circuit
The light sequencer uses two ICs and 10 SCRs to create.an ac sequencer. The first 10, a 555 timer, is used to provide clock pulses for 102. The 10 is configured as an astable multivibrator, and its output is on pin 3. Capacitors CI and 04, along with resistor R2 and potentiometer PI, control the frequency of the pulses. IC2 is a 4017 Johnson...
Holiday Light Sequencer Circuit
Integrated circuit Ul (a 555 oscillator/timer) is wired as a conventional pulse generator. The frequency of the pulse generator is controlled by potentiometer Rll. Resistor R2 puts areasonable limit on the highest speed attainable. The output of the pulse generator is fed to the common clock input of U2, a 74C175 quad D-type flip-flop. Each...
Preamp Transmit-Receive Sequencer Circuit
This circuit is useful in amateur radio VHF and UHF work where a mast-mounted antenna preamp is used for receiving. The kit controls T-R switching and change-over relay sequencing so that high RF levels are prevented
Pseudo-Random Bit Sequence Generator Circuit
In this circuit, an additional exclusive-OR gate is connected after the modulo-2 feedback, with CI and R2 applying the supply turn-on ramp into the feedback loop. This provides sufficient transient signal so that the PRBS generator can self-start a power-up. A shift-register length of 10 is shown with feedback at stages 3 and 10, providing...
A sequence of opening and closing the outlet circuit
Analyzing the three-phase i [l + Jl search winding its head and tail of many therapies such as the use + hair bundle judge committed two apostrophes. Simple and easy to i safel
A read-only phase sequence indicator circuit
As can be seen from the three-phase voltage waveform diagram [Figure 2- 76 (a)] When one of the phases voltage from positive to negative over the zero point, followed by a phas
Units from the MAX4100 4101 gain buffer circuit diagram
As shown by FIG MAX4100/4101 unit gain buffer circuit constituted. This circuit uses a small resistor (24 ) placed in the feedback loop amplifier constituting a unity gain buff
Unity gain buffer circuit diagram of the MAX4102 4103
As shown by MAX4102/4103 unity gain buffer circuit shown in FIG. This circuit uses a small resistor (24 ) placed in the feedback loop amplifier constituting a unity gain buffer
OPA606 capacitive load isolation buffer
As shown for the isolation buffer circuit capacitive load. Usually when an external op amp for capacitive load, will seriously affect the stability of the circuit, while its dy
Buffer leakage current measurement circuit diagram OPA111 INA117
As shown in FIG OPA111 constituted by the input buffer leakage current measuring circuit. D1, D2 of the transistor 2N3904, which will short the base and collector contact (open
INA321 OPA340 composed output buffer circuit 322
As shown in FIG constituted by OPA340 INA321/322 output buffer circuit. INA321/322 optimum load impedance 10k or more. When the load impedance decreases, the output current wil
Back radiation small buffer amplifier
Back radiation small buffer amplifier It shows an inverse radiation small buffer amplifier. The circuit consists of three series-connected transistors of the buffer amplifier c
Buffer amplifier Shown in use as a transistor emitter follower buffer amplifier for applications that require high input impedance of the amplifier. Complementary push-pull cir
Belt conveyor interlock motor operation sequence control circuit
Circuit shown in Figure 3-86. The line utilization time relay to control two motors, one of the first than the other after starting stall. Adjust the time relay KTi, two electr
Three motor control circuit start and stop sequence requirements
Circuit shown in Figure 3-89. After starting the motor Mi can guarantee, it allowed the other two to start the motor. Shutdown, power motivation Mz, can first stop, but as long
Christmas LED lights circuit with 555 timer
This circuit sequence through a pattern of Christmas lights to turn on and off each string of lights, one at a time. After sequencing through all strings, the circuit turns the last string off, then turns all strings on, and then off, before repeating the pattern. Some simple wiring changes will let you set up other patterns. This circuit...
ADCs for Simultaneous Sampling
The MAX125 and the MAX126 are complete 14-bit data-acquisition systems in which four of eight inputs are tracked and held simultaneously (Figure 1). An on-board sequencer allows the user to program which four (or fewer) channels are to be digitized. Throughput rates range from 250ksps for one channel to 76ksps for all four channels. The input...
Strange LED sequencer
This deceptively simple sequencer actually pulse width modulates the LEDs as it fades from one LED to the next. Bulbs will last much longer when driven in this gentle manner. Add MOSFETs or transistors to the outputs if you wish to drive bulbs. You can reconfigure the three capacitors from a wye configuration to a delta configuration, or you can...
LEDs or Lamps Sequencer
Very simple, versatile modular design. The purpose of this circuit was to create a ring in which LEDs or Lamps illuminate sequentially. Its main feature is a high versatility: you can build a loop containing any number of LEDs or Lamps, as each illuminating device has its own small circuit. The diagrams show three-stage circuits for simplicity:...
74C164 8 bit shift register work as a heart for car LED light sequencer
This Car LED Light Sequencer uses a standard 74C164 8 bit shift register as its heart of operation. The 74C164 is also known as a 8-Bit Parallel-Out Serial Shift Register which is a monolithic complementary MOS (CMOS) integrated circuit. These 8-bit shift registers have gated serial inputs and clear. Each register bit is a D-type master/slave flip
Multipattern Running light using ATtiny2313
10 Step Baby Gate Sequencer CD4017
I Just finished my newest version of the "baby 10 sequencer". It has control voltage and gate switches. I found some problems with it, and subsequently this module. I will be posting some modifications in the next few days. In preparation of improving my baby 10 sequencer, I`ve been coming up with things to do with the CD4017. A couple weeks ago I
LED CHASER Sequencer
All LED`s Negatives are a connection to the "COM" pad, than through a 220 Ohm resistor to Ground. No Need for other "current limiting" resistors, even with supply voltages up to 16 volts. )
Simple Sixteen Stage Bi-Directional LED Sequencer
The bi-directional sequencer uses a 4 bit binary up/down counter (CD4516) and two "1 of 8 line decoders"74HC138 or 74HCT138) to generate the popular "Night Rider" display. A Schmitt Trigger oscillator provides the clock signal for the counter and the rate can be adjusted with the 500K pot. Two additional Schmitt Trigger inverters are used as a SET
Expressive Arduino Midi Sequencer
This section of code outlines the main sequence of operation for the sequencer. First, a for loop is utilized to govern which step the sequencer is operating in. Within this loop, first an address is made using the assignByteToPins() function, this sends a 4 bit binary address to ensure that the input of each analog multiplexer corresponds to the
555 Timer Circuits
RC Model Toy Circuits
H Bridge Circuits
Ultrasonic distance finder circuit
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 measured. There are three main categories of distance measurement methods in use: a) By...
Simple Metal detector circuit with CD4030
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 find something potentially valuable, hidden a few centimeters below the soil. So many...
Fully automatic watering circuit for flower pots
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 circuit comes as a solution to this problem. Depending on humidity of the pot at...
Simple deep searching metal detector circuit
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 circuit of this metal detector, it is possible to detect a metal coin in depth of 90 to...
Sub-Harmonic Bass Converter for Electric Guitars
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, such as filtering or distortion. Instead, a frequency division system produces outputs...
Echo Depth Sounding Sonar for Boats
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 calibration of the rope. This arrangement still exists in some yachts. The big...
100W HiFi Audio Amplifier Circuit
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 supply must be symmetrical so that no electrolytic capacitors are needed at the outlet....
Plant-Pot Water Level Indicator Circuit
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. The circuit of the device is shown in Figure 2. The water detection is made from the bottom...
Analogue Sound Preasure dB-Meter Circuit
The best human ear can capture sounds from 20Hz to 20KHz. These limits are known to be the broadest that can exist. Normally the normal limits range from 100Hz to about 13KHz and depend on the age and health of the individual. We for our measurements and to have a good accuracy we will get the limits of 20Hz to 20KHz. A sound to be heard does...
DIY HV Variable Capacitor
DIY PMA Alternator Plans
Digital Signal Integrity