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Crank Doorbell Circuit Schematic – Circuit Schematic
Crank Doorbell Circuit Schematic
An interesting hobby circuit of a crank door bell! The circuit is built around a timer 555 and a musical piezo-buzzer. The circuit works off 9 volt battery su...
Positive Trigger Timer Circuit – Circuit Schematic
Positive Trigger Timer Circuit
This 555 timer is designed unusually to give a positive output through a control over its reset pin. Usually the timer IC 555 is triggered by applying a ne.....
Retriggerable Monostable Circuit – Circuit Schematic
Retriggerable Monostable Circuit
CD 4047 is the low power Monostable / Astable Multivibrator that requires only an external capacitor and a resistor to give the output pulses. The values o.....
Precision Monostable Multivibrator Circuit – Circuit Schematic
Precision Monostable Multivibrator Circuit
A monostable multivibrator using IC CD4538. It is a precision monostable/astable multivibrator IC free from false triggering. This can be used for various appli...
1 Hz Pulse Frequency Generator with 555 – Circuit Schematic
1 Hz Pulse Frequency Generator with 555
A 1Hz pulse/frequency generator using the popular timer IC 555 which is wired as an Astable Multivibrator. The output pulses can be indicated visually by the LE...
Triggering a 555 with another – Circuit Schematic
Triggering a 555 with another
Can anybody tell me if the output of a monostable 555 timer circuit can be used to trigger another similar timer circuit. I have shown my idea with a.....
really need help on PWM and PPM circuit – Circuit Schematic
really need help on PWM and PPM circuit
hello everyone..im need some helps i`ve construct the PWM and PPM circuit the output going smoothly but i`ve some problem im not very.....
NE555 damaged by ultrasonic operation – Circuit Schematic
NE555 damaged by ultrasonic operation
Hello: First of all I must start with the classic ""I`m new to this forum so excuse if this post is in the wrong section / this was already.....
555 timer as a voltage to frequency converter – Circuit Schematic
555 timer as a voltage to frequency converter
Hi All, I am currently working on a project that requires a 0-10V DC supply to be converted into a linear fequency range - square wave. for instance.....
555 timer reverse polarity 2 – Circuit Schematic
555 timer reverse polarity 2
Originally Posted by CDRIVE Thanks for clarifying that. Since you have a dual (+-) supply a SPDT relay will suffice. Do you want a solid state.....
The One-shot Monostable Multivibrator Circuit – Circuit Schematic
The One-shot Monostable Multivibrator Circuit
Electronics Tutorial about the Monostable Multivibrator Circuit also known as a One-shot Monostable Multivibrator used as a Pulse Generator Circuit.....
Photo Timer Circuit – Circuit Schematic
Photo Timer Circuit
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555 Timer With Audio Alarm Circuit – Circuit Schematic
555 Timer With Audio Alarm Circuit
555 Timer With Audio Alarm Circuit Here is a very simple circuit for electronic timer with audio alarm. With the help of this circuit, audio.....
MC14093 pulse width modulation controller circuit design – Circuit Schematic
MC14093 pulse width modulation controller circuit design
Using a MC14093 CMOS type IC, a quad 2-input NAND Schmitt trigger circuit can be designed a very simple pulse width modulation circuit controller electronic pro...
Voltage doubler circuit using 555 timer – Circuit Schematic
Voltage doubler circuit using 555 timer
This voltage doubler circuit use a 555 timer integrated circuit wired as an astable mutivibrator. This voltage doubler circuit can deliver only up to 50mA outpu...
555 timer Led Flasher circuit electronic project – Circuit Schematic
555 timer Led Flasher circuit electronic project
This LED Flasher circuit is based on the 555 timer IC. The LED Flasher circuit diagram is very simple and require few external components. When the circuit is w...
555 timer Clap switch circuit electronic project – Circuit Schematic
555 timer Clap switch circuit electronic project
This 555timer clap switch circuit electronic project is designed using some common electronic parts. This 555 timer clap switch circuit electronic project opera...
555 timer circuit temperature monitoring system – Circuit Schematic
555 timer circuit temperature monitoring system
This 555 timer circuit temperature monitoring system electronic project can be monitor temperature in up to four points. Using this 555 timer circuit temperatur...
Servo-Checker JR / Futaba – Circuit Schematic
Servo-Checker JR / Futaba
The first timer IC555 creates a negative trigger signal of approximately 45Hz (a trigger impulse every 22ms, DO NOT exceed 50Hz for proper servo function). The ...
alternating flasher circuit diagram – Circuit Schematic
alternating flasher circuit diagram
This circuit uses three easily available 555 timer ICs. All three work as astable multivibrators. The first 555 has an on period and off period equal to 1 sec. ...