555 IC Astable multivibrator circuit
#555 timer
#astable
#multivibrator
#pulse generator
#square wave
#timing circuit
#electronics
#signal generator
#frequency
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555 Voltage Doubler Relay Driver
These novel relay driver circuits have the capability to activate a relay with a coil voltage rating that is double the supply voltage (Vcc). Once the relay is activated, the armature is maintained using Vcc, resulting in a significant reduction...
temperature control circuit 555 ic
A thermistor is utilized in the circuit for heat sensing, while two 5K variable resistors are incorporated to calibrate the circuit for activating the relay at the desired temperature. The inclusion of a 1N4007 diode across the relay serves to...
Relay Toggle Circuit Using a 555 Timer
This 555 timer circuit toggles a relay when a button is pressed. Pins 2 and 6, which are the threshold and trigger inputs, are maintained at half the supply voltage by two 10K resistors. When the output is high, the...
555 Timer IC For Tachometer Circuit Project
The following circuit illustrates a Tachometer Circuit Project. This circuit is constructed using the 555 Timer IC. Features include a monostable IC and voltage capabilities.
The Tachometer Circuit utilizes a 555 Timer configured in monostable mode to measure the rotational speed...
Basic 555 Squarewave Oscillator circuit
The following circuit is a basic 555 square wave oscillator. Features include a 1 kHz tone, simple circuitry, a current limit of 200 mA, reduced inductive voltage, and a supply voltage range of 4.5 to 9 volts. Components used are...
Ultrasonic transmitter circuit 555
The circuit described is a 555 ultrasonic transmitter constructed to emit ultrasonic signals at a frequency of 40 kHz. It operates by generating oscillating pulse outputs from a 555 timer (specifically the T-40-16 model). The circuit is designed to function...
electronics traffic light circuit
The clock pulses from the 555 astable circuit are sent into the 4017 decade counter. Each output becomes high in turn as the clock pulses are received. Appropriate outputs are combined with diodes to supply the amber and green LEDs.
The...
555 Applications and Examples
A collection of drawings showcasing various applications of the 555 timer IC. These include schematic diagrams sourced from online resources and literature, intended for personal reference. The original web pages from which these schematics were derived have not been preserved,...
Electronic Dice
The 555 timer IC is connected for Astable Operation, the clock pulses are fed to the 4017 IC via the 10K resistor. The 4017 is a 10 stage counter, output 6 (pin 5) is connected to RESET (pin 15), thus...