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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
255W Valve RF Transmitter circuit
This transmitter of 255W is depended on the coils we put at it to work in both the middle and the short waves. The power in the antenna is 255W and includes 4 states. The first consists of the EF80 that works as a COLLPITS CLAPP oscillator. Frequency selection is done in a somewhat unusual way: Instead of the variable capacitor, it uses a...
Arduino DAC Signal Generator project
Once the circuit gets current, all variables are initialized and the loop function is continually running. Initially all LEDs are off and there is no signal at the output. By pressing the signal switch, the first light that shows the most signal is at the output and the D0-D7 terminals give the appropriate signal which, when passing from the...
Recording circuit of phone conversations using PC
This circuit is used to record telephone conversations on your landline telephone. All you will need is this small circuit and subscription of your PC. There are few times when we forget what we said or told us. So we need recording. Sometime, not many years ago, recording of this kind of conversation was done with a small tape recorder. The...
FM Micro-Transmitter Bug Surveillance Circuit
The transmitter we recommend to build is quite simple. It can even be built by a beginner. However, unlike the ease of construction and its small size, it is almost certain that it will impress you with its outstanding performance. Its autonomy is 12-15 hours, with a 9 volt battery and its range is from 100 to 300 meters depending on the...
Construction of 50Watt 8Ω two-way Hi-Fi Speakers
The presented speakers are distinguished for their small dimensions and their extraordinary sound. Our home space is often limited and prohibitive for large speakers. This limitation does not mean that we will stay without high Sound Quality. Its design is simple, low cost and is easy to construct. Speaker types are too many and are designed in...
GSM modem circuit with Wavecom WMOi3
Modems are devices that connect either remote devices to a computer, or two or more computers to each other. Their connection is usually wired. The GSM modem we present is wireless. It can connect two computers, a computer with the internet or even be the central unit for a data acquisition system. Generally the construction is a GSM phone...
1W UHF Linear Amplifier with BLW33
This circuit is an amplifier for small transmitters operating in the UHF band, specifically in the 450-800MHz range. The amplifier works in class A and we used the well-known Philips BLW33 transistor for its manufacture. The construction, although simple, can be said to be quite critical due to the high frequency singularity. To achieve this, a...
8W Amplifier with TDA2003 circuit
Many times a small amplifier is needed to meet the needs of small spaces. This amplifier can be either mono or stereo, with this circuitry you can comfortably drive two small speakers. To build the amplifier you do not need anything but a few materials and a small power supply. The power of the amplifier, although low power, will solve many...
FM Linear Amplifier 400mW
This amplifier is intended for amplifying low signals from oscillators in the FM band. It does not have frequency regulators with variable capacitors and coils, it has a wide range and moderate power capable of driving several linear amplifiers. The whole construction is based on the two low-power 2N4427 transistors, which are designed for the...
Digital Signal Integrity
Interconnection and Timing of Digital Circuits
CMOS Circuits Tutorial
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64 Step Eurorack CV/Gate Sequencer
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