easy to build 555 circuit designs with schematics
#555 timer
#pulse generator
#schematics
#electronics
#DIY
#timing circuits
#waveform generator
#educational circuits
#basic circuits
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Delaying Pulse from 555 circuit
The circuit below illustrates generating a single positive pulse which is delayed relative to the trigger input time. The circuit is similar to the one above but employs two stages so that both the pulse width and delay can be...
Serial DRAM non voltizer
This device includes a ringing generator and a tone oscillator. The tone oscillator is configured to operate at either 350 Hz or 440 Hz. The ringing generator is a sealed module providing 86 Vac at 20 Hz. Upon application of...
Heat Or Light Activated Alarm Circuit
The tone generated by a 555 oscillator can be activated by heat or light, which causes Q1 to conduct transistor Q2 (TIP 3055). Q2 (TIP 3055) functions as an audio amplifier and speaker driver.
The circuit utilizes a 555 timer configured...
Variable on-off times circuit using two 555 timers
This timer utilizes two 555 integrated circuits (ICs) to adjust the desired output. The variable resistors VR1 and VR2 serve as potentiometers to modify the cycle speed. The circuit can be powered with a 9 to 12-volt power supply, consuming...
555 high voltage generator circuit
The high voltage generator depicted in figure 16-18 utilizes the 555 timer IC as its primary component. The oscillating voltage produced is enhanced through a step-up transformer. The astable multivibrator configuration comprises the 555 timer along with resistors R1 and...
metronome
This circuit employs the 555 timer configured in astable mode to produce a continuous square wave output from Pin 3. The output is subsequently filtered through a 22.5 µF electrolytic capacitor to generate a smooth oscillation, resulting in a 'toc-toc'...
Laser Activated Switch
This circuit is designed around a 555 timer and utilizes very few components. Its simplicity allows even novices to construct and use it as a control device. A laser pointer, widely available in the market, can be employed to operate...
555 Infrared Transmitter-Receiver
The infrared transmitter and receiver circuit depicted in the schematic diagram below can function as a remote control. The transmitter primarily operates as an oscillator.
The infrared transmitter and receiver circuit is designed to facilitate wireless communication through infrared signals, making...
Classic Schematics
Here are some schematics and information that can be difficult to locate elsewhere. If there are schematics that should be included in this collection, please feel free to reach out. The intention is to expand this collection over time, so...