Using two SCRs 1st 2nd Circuit Diagram

This is a simple game circuit Using two SCRs 1st 2nd Circuit Diagram. This control circuit is designed to lock out the other SCR when one has been triggered, so only one lamp will light. Indicator lamp Il is controlled by SCRl. The operator simply presses switch Sl. Lamp I2 is similarly controlled by S2 and SCR2. With both switches open, neither lamp is lit. The result is insufficient gate current to trigger SCR2 into conduction, so lamp I2 does not light.If S2 is pressed first, the reverse situation occurs. Once one of the SCRs is activated, it is necessary to open S3 to tum the light off.

Using two SCRs 1st 2nd Circuit Diagram

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Using IC IT82207 Sounds from Circuit Diagram

This is a simple Using IC IT82207 Sounds from Circuit Diagram. This circuit is able to take you to the world of the Wild West. For this it uses the integrated 18-pin IT82207 (IC1) of Holtek, which literally takes care of everything. You have to do is add a few accessories, including a loudspeaker and six selector switches. From an operational point of view, IT82207 hosts inside a generator noise sequences, that listening to them. Reminiscent of the Wild West. The choice of sound is through the switch 8186, whose importance is noted below. In the resting state, the circuit absorbs power less than 1 Ma.

Using IC IT82207 Sounds from Circuit Diagram

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Simple Pulse Train Circuit Diagram

This is a Simple Pulse Train Game Circuit Diagram. This circuit has a rate multiplier using a 4093 Schmitt trigger as an oscillator, driving a 4017 decade counter. When a pulse present at the input (to C2) 4017 is reset, output zero goes high, and outputs 1 to 9 go low. The oscillator (4093) starts running and the 4017 counts the pulses until the 4017 output (1 to 9) connected to pin 1 and 2 of the 4093 goes high. The oscillator is inhibited and the output remains high until the next input pulse.

Simple Pulse Train Circuit Diagram

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Gamer Lie Detector Circuit Diagram

This is a simple Gamer Lie Detector Circuit Diagram. The two probes shown are held in the hands and the skin resistance applies bias to the transistor. The 5 k ohm pot is set for zero deflection on the meter. When the ' 'subject'' is embarrassed or lies, sweating on the hands takes place, increasing the bias to the transistor and upsetting the bridge balance.

Gamer Lie Detector Circuit Diagram

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Digital Audio Memo Alert Circuit Diagram

This is a Digital Audio Memo Alert Circuit Diagram. This device prevents paper notes and memos from being overlooked. A paper note placed between two fingers made of a conducting material (metal or conductive plastic) breaks the circuit, allowing pair 1 of Ul-a to go high. This causes Ul-c Ul-d to act as an oscillator, pulsing piezo buzzer BZ1.

Digital Audio Memo Alert Circuit Diagram

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Very Simple Color organ Circuit Diagram

This is a Simple Color organ Circuit Diagram. The term color organ refers to a tradition of mechanical (18th century), then electromechanical, devices built to represent sound or to accompany music in a visual medium—by any number of means. In the early 20th century, a silent color organ tradition (Lumia) developed. In the 1960s and '70s, the term "color organ" became popularly associated with electronic devices that responded to their music inputs with light shows. 

Very Simple Color organ Circuit Diagram

The term "light organ" is increasingly being used for these devices; allowing "color organ" to reassume its original meaning. In this circuit Transformer Tl can be any matching transistor type in the range of 500/500 to 2500/2500 ohms. No connections from the SCR or its components are connected to ground. For safety's sake, keep the 117-V line voltage from the amplifier connections— that is the reason for using Tl. To adjust, set potentiometer Rl `off` and adjust the amplifier volume control for a normal listening level. Then adjust the potentiometer until the lamp starts to throb in step with the beat.

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Simple RSG Circuit Diagram

This is a Simple RSG Circuit Diagram. Ready,Set,Go! is a software package for desktop publishing. Originally developed for Apple Computer's Macintosh by Manhattan Graphics.

Simple RSG Circuit Diagram

This game tests a player`s reaction time. It is activated by closing switch SI, which starts the tone generator and arms the circuit. The touch plate, labeled PLAY in the diagram, consists of two metal strips about l/16th-inch apart. The first player to bridge the gap with his or her finger turns off the tone and lights the associated LED indicator

A second touch plate, labeled CLR in the diagram, clears the circuit, extinguishing the LED, when its gap is bridged by a fingertip.

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Simple W-indicator Circuit Diagram

This is Simple W-indicator Circuit Diagram. This circuit Two TTL ICs and a handful of other components are all that is needed for a circuit that will indicate which of four buttons was pressed first, as well as lock out all other entries A logic 0 at one of the Q outputs, lights the appropriate LED and locks out other entries by taking the clock input low. 

Simple W-indicator Circuit Diagram

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Simple Electronic keyer Circuit Diagram

This is a Simple Electronic keyer Circuit Diagram.This circuit automatically produces Morse code dots and dashes set by time constants involving Cl and C2. Rl sets dot/dash ratio and R2 sets the speed R5 sets the relay drop-out point.

Simple Electronic keyer Circuit Diagram

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Individual Message Recorder Circuit Diagram

This is a simple Individual Message Recorder Circuit Diagram.The Individual message recorder is built around an ISD1016 CMOS voicc messaging system, which does away with the cumbersome and expensive analog-to-digital and digital-to-analog conversion circuits. A functional block diagram of the ISD1016 is shown. The ISD1016 contains all of the functions necessary for a complete message-storage system. 

Individual Message Recorder Circuit Diagram 

The preamplifier stage accepts audio signals directly from an external microphone and routes the signals to the OUT (analog out) terminal. An automatic-gain control (AGC) dynamically adjusts the preamplifier gain to extend the input signal range. Together, the preamp and AGC circuits provide a maximum gain of 24 dB. The internal clock samples the signal and, under the control of the address-decoding logic, writes the sampling to the analog-storage array. Eight external input lines allow the ISD1016`s message space to be addressed in 160 equal segments, each with a 100-millisecond duration. When all address lines are held low, the storage array can hold a single, continuous, 16-second message. 

However, there is a special addition to the POWER DOWN input (pin 24) of Ul. If the internal memory becomes full during recording, an overflow condition is generated in order to trigger the next device. Once an overflow occurs, pin 24 must be taken high and then low again before a new playback of record operation can be started. Transistor Ql, C3, R5, and R6 form a one-shot pulse generator that automatically clears any overflow condition each time that start switch (SI) is pressed. Switch S2 selects cither the playback or the record mode. Switch S4an 8-position (a-h) DIP switchis included in the circuit to allow the circuit`s record/playback time to be varied from 0 to 16 seconds. The maximum time available is when all 8 switch positions are closed (or set to the on position)..Resistor network R8 (a-h) is included in the circuit to provide a pull-up function for the address lines, which thereby controls Ul`s record/playback time.

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Build a Siren Alarm Simulates Star Trek Red Alert Circuit Diagram

Build a Siren Alarm Simulates Star Trek Red Alert Circuit Diagram. The signal starts at a low frequency, rises for about 1.15 seconds to a high frequency, ceases for about 0.35 seconds, then starts rising again from a low frequency, and so on ad infinitum it sounds like the star trek red alert.

 Siren Alarm Simulates Star Trek Red Alert Circuit Diagram

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LED 4-Channel Commutator Circuit Diagram

This is a simple LED 4-Channel Commutator Circuit Diagram.The DS7800 voltage translator is a monolithic device that provides from 10 V to -20 V gate drive to the JFETs while at the same time providing DTL/TTL logic compatibility.

LED 4-Channel Commutator Circuit Diagram

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Build a Simple Quiz Master Circuit Diagram

How to Build a  Simple Quiz Master Circuit Diagram, Quiz master is a device which uses electronics to decide who pushes their button first, Up to eight players each have their own answer button to press, corresponding to the four Red Team and four Green Team LEDs on the master control board. As soon as the first contestant who thinks that he knows the answer presses the button, a loud tone sounds, all other contestants are locked out, and the contestant`s indicator LED lights on the control board so that it`s obvious who buzzed in first. 

The control board also features two selectable time out periods each adjustable from 3 to 15 seconds, setting specified time intervals in which the player must answer before the time`s up! tone sounds. Eight SCRs form the heart of the circuit. The anode of each SCR has a positive (+) bias on it by way of an LED and a negative (-) bias on cach cathode. As soon as a contestant depresses his or her switch button (S4 through Sll), a positive bias is applied to the respective SCR gate. 

Simple Quiz Master Circuit Diagram

That bias latches the contestant`s SCR on, which in turn lights up the appropriate LED on the master control board. At the same time, the activity of the SCR latching on turns on the answer buzzer (BZ) and locks out all other contestants. The lockout occurs because relay K2 contacts operate to remove the availability of a bias voltage to the gate of the other SCRs. The other circuitry consists of a timer circuit and a time`s-up tone-generating circuit. 

The timer circuit consists of transistor Ql, capacitor CI, resistors Rl through R3, and trimmer resistors PI and P2, Depending on the adjustment of the trimmer resistors and selection switch S3, a specific time period can be set. The lime`s-up tone-generating circuit is made up of IC1, transistors Q2 and Q3, and the associated resistors and capacitors. The on time of the tone can be set by P3. Relay Kl, which is operated by the timer circuit, serves to reset the entire unit for the next question.

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Simple Tape Recorder Interface Circuit Diagram

This is a Simple Tape Recorder Interface Circuit Diagram. However, you can record cassette tapes into any of these machines with an audio interface. The interface allows data to be saved on an ordinary tape recorder at a speed of 2400 bit/s. The serial stream of data Fig. 1 (A) is coded with a clock of 2400 Hz (B), by means of XOR gate IC 1/1. Logical `high` and `low` appear as shown in Fig. 2 (C). 

 Simple Tape Recorder Interface Circuit Diagram

These impulses are lowered in amplitude and feed into the record input of a low cost tape recorder. During the playback, pulses (D) are amplified with CMOS gate IC 1/2 connected as a linear amplifier, and providing a TTL level signal shown in (E). On both positive and negative transitions IC 1/4 forms short pulses as shown in (F) (approx. 50 *ts) that triggers one shot IC2. A monostable one shot pulse width is adjusted to be 3A of bit length (310 µß). 

A change from `high` to `low` in a coded stream generates a `low` pulse width of one bit cell. The same is for change from ' low'' to ' 'high'' that generates a `high` pulse of the same width. During this pulse one shot latches the state of line in D type flip-flop IC3 (G). When a stream consists of multiple `ones` or `zeros,` the one shot is retriggered before it comes to the end of the quasistable state and the state of the flip-flop remains unchanged. The original data stream is available at the output of the flip-flop (). Z80 the DUART that receives these pulses is programmed so that the receiver clock is 16 times the data rate (38.4 kHz).

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Simple Electronic Coin Tosser Circuit Diagram

This is a Simple Electronic Coin Tosser Circuit Diagram. For this project, you create an electronic version of a coin toss. Instead of flipping a coin into the air to see if it lands heads or tails, you build an electronic.The circuit shown simulates the flipping of a coin by merely pushing switch PB1. This is an easy circuit.

Simple Electronic Coin Tosser Circuit Diagram

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Simple Sound Generator Circuit Diagram

This is a simple Run-Down Clock or Sound Generator circuit diagram. Used in electronic roulette or dice games, this circuit produces a clock signal that initially is several tens of kHz (depending on C2) and gradually decreases to zero in about 15 seconds, as CI discharges through R4.

Simple Sound Generator Circuit Diagram

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Simple Heads or Tails Circuit Diagram

This is a Simple Heads or Tails Circuit Diagram. It is not always easy to decide what is heads and tails on a given coin. In this simple circuit SI must be a push-to-make, release-to-break, switch An easy circuit.

Simple Heads or Tails Circuit Diagram

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Simple Pot Shot Circuit Diagram

This is a very Simple Pot Shot Circuit Diagram. A very crazy shot, usually not aimed or A quick lighting up of a joint before you leave. This is a circuit for a game of the shooting gallery variety. IC2a and b form an a stable multivibrator clocking ICl which causes LEDs 1-8 to flash in turn LED 5 is the target LED and the object of the game is to depress PBI just as LED 5 comes on. If this is done, the whole display is blanked for a few seconds signifying a hit Otherwise, the LED which was lit remains lit. When the push button is released, C2 discharges through R2 taking 8 pin 13 low again and the LEDs will start to flash again.

Simple Pot Shot Circuit Diagram

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Digital Electronic Dice Circuit Diagram

Simple and digital electronic dice game circuit diagram, this is a simple circuit. Powered Board Games is a new category of board games they are digital and can be played using a tangible electronic dice. In this circuit Six LEDs are arranged to produce a display the same as the dots on a dice. When PBI is depressed, the display is blanked and the oscillator (ICl a, b, c) clocks IC2 at about 1MHz. IC2 counts from zero and resets on seven When PBI is released, the display is enabled and a decoding system (IC3) produces the correct output on the LEDs.

Digital Electronic Dice Circuit Diagram

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Simple Reaction Timer Circuit Diagram

This is a Simple Reaction Timer Circuit Diagram. This simple circuit uses a timer to generate pulses at a 5-ms clock rate. The pulses are shifted into the shift register, one at a time, lighting an LED. An auxiliary timer that generates one pulse per second is used to generate timing to activate the `go` LED and start the 5 ms pulses clocking into the registers. At the go signal each player presses his buttons (S3 or S4). The delay (reaction time) is read out on LED 4 to LED 17; after six seconds, the sequence repeats.

Simple Reaction Timer Circuit Diagram

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