555 Low-duty-cycle Oscillator
#555 timer
#low-duty-cycle
#pulse generator
#astable multivibrator
#signal generation
#timing circuit
#electronics
#waveform generator
#frequency control
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555 circuit Can supply enough neg voltage
Can a 555 negative supply circuit, like the one below I pulled from another schematic, supply enough negative voltage to an LM324 and an AD736JN?
The 555 timer integrated circuit can be configured to generate a negative voltage supply, which...
Electronic Dice circuit
The IC1 is a 555 timer IC configured for astable operation, generating clock pulses that are fed to IC2 through a 10K resistor. IC2 is a 10-stage counter, with output 6 (pin 5) connected to RESET (pin 15), resulting in...
555 Duty Cycle Control
This is a simple oscillator circuit that varies the duty cycle over a wide range without affecting the frequency. It is a variation of the simple 555 astable multivibrator.
The oscillator circuit utilizes the 555 timer IC configured in astable mode,...
high voltage 555 audio modulated flyback
The iPod Shuffle has malfunctioned, likely due to a failure in the controller chip for the mini jack, resulting in the inability to detect the charger, PC connection, or headphones. The arc must be kept short to minimize distortions from...
Inductorless Power Supply Converter Circuit
Using a 555 timer and voltage doubler, this circuit will supply over 50 mA at 20 V DC. Transistors T1 and T2 act as power amplifiers to drive the voltage doubler. The frequency of operation is approximately 8.5 kHz.
The circuit...
555 timer Pulse generator
Pulse Generator kit will generate a frequency in KHz which can form a good test gear project. This kit is based on the classic LM555 timer IC. Input - 12 VDC Max @ 40 mA. Range - jumper selectable and...
Knight Rider Running Light Schematic
The speed of the display can be adjusted as desired. The output from the 555 timer is directly connected to the input of a CD4017 decade counter. The input of the counter is referred to as the CLOCK line (from...
TV remote control blocker/jammer circuit diagram
This small device can be aimed at a television to jam the remote control signal. The circuit design is straightforward. A 555 timer is configured as an astable multivibrator operating at a frequency of approximately 38 kHz, which is the...
Divide-multiply-with-only-one-trim
This relatively simple and inexpensive circuit requires one trimming operation and can multiply or divide with a consistent accuracy of greater than 1 part in 1,000. An economical CMOS version of the standard 555 timer chip, in conjunction with a...