Simple Electronic Light Sequencer Circuit Diagram

This is Simple Electronic Light Sequencer Circuit Diagram. 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 counter, which shifts a high-signal level to each one of its 10 output pins in sequence. Each output pin is resistively coupled to the gate lead an an SCR. When the respective output pin on the 4017 is high and the positive half of the ac cycle is on the anode lead of the SCR, it turns on.

Electronic Light Sequencer Circuit Diagram With Parts List

The lamp that is connected to its anode lights. Power is brought into the PC board by the line cord, then the circuit is fuse-protected. Diode LD1 changes the ac to pulsating, which is smoothed by C2 and C3. R23 limits the current, and zener diode D2 limits the dc voltage to 6 Vdc.

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Pseudo Random Bit Sequence Generator Circuit Diagram

This is a simple Pseudo Random Bit Sequence Generator Circuit Diagram. A binary sequence is a sequence of bits, i.e. A BS consists of ones and zeros.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. 

 Pseudo Random Bit Sequence Generator Circuit Diagram

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 true and inverted maximal length sequence outputs. This technique applies an input directly to the feedback loop.

Therefore, it`s considered more reliable than applying an RC configuration to the shift-register reset input to create a random turn-on state.

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Build a Preamplifier Transmit Receive Sequencer Circuit Diagram

How to Build a Preamplifier Transmit Receive Sequencer Circuit Diagram? This is a simple circuit and this circuit is useful in amateur radio VHF and UHF work where a mast-mounted antenna Preamplifier is used for receiving. The kit controls T-R switching and change-over relay sequencing so that high RF levels are prevented from accidentally being applied to the preamplifier during switching intervals. 

Preamplifier Transmit Receive Sequencer Circuit Diagram

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Simple Light Chaser I Circuit Diagram

Simple Light Chaser I Circuit Diagram. Chase lights (or chaser lights) are often associated with the marquee signs of some movie theaters, and have also been used as a common element of television. Light Chasers is an album by Cloud Cult.In this circuit Up to 100 lights, LEDs, or optocoupler triac circuits can be sequentially activated by this circuit. One (Ul) 4017 decode counter sequences 10 LEDs whose common anode is returned through a second (U2) CD4017, which counts at one-tenth of the rate. The flash rate is controlled by U3, a clock circuit, with a 555 timer. View:  Artificial random Simulated Flicker Sequencer Circuit Diagram

Simple Light Chaser I Circuit Diagram

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Artificial random Simulated Flicker Sequencer Circuit Diagram

Artificial random Simulated Flicker Sequencer Circuit Diagram, The artificial random sequencer drives a solid-state relay. If you power a low-wattage lamp from the relay, the lamp will appear to flicker like a candle`s flame in the wind; using higher-wattage lamps allows you to simulate the blaze of a fireplace or campfire. 

 Artificial random Simulated Flicker Sequencer Circuit Diagram

You can enhance the effect by using three or more such circuits to power an array of lamps. The circuit comprises an oscillator, IC1, and a 15-stage, artificial random sequencer, IC2-4. The sequencer produces a serial bit stream that repeats only every 32 767 bits. 

Feedback from the sequencer`s stages 14 and 15 go through IC4D and back to the serial input of IC2. Notice the RC network that feeds IC4C; the network feeds a positive pulse into the sequencer to ensure that it won`t get stuck with all zeros at power-up. The leftover XOR gates IC4A and IC4B further scramble the pattern. The serial stream from IC4B drives a solid-state relay that features zero-voltage switching and can handle loads as high as 1 A at 12 to 280 Vac.

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