lm555
Posted on Feb 5, 2014
Related Circuits
New Circuits
-
This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of.... -
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is.... -
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to.... -
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This.... -
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the.... -
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,.... -
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the.... -
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power.... -
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
.
This compact metronome will run for years on a single nine-volt transistor battery. Has both tone...
The darkroom timer/controller uses few external components: a display, a digit driver, keyboard,...
This circuit can produce up to 1 W of audio power to drive a speaker or horn. When the CDS cell...
The dc values of op-amp offsets can`t always be taken for granted when delivering ac outputs. No...
As I am using a Common Cathode led-strip instead of a Common Anode one as used in the above link...
This circuit could be used (depending on your circumstances) by a gentleman to summon his butler,...
Speed regulation is accomplished by sensing the motor current with R17 and using it as positive...
The clock was experimental until I picked up some experience with the circuitry. I experimented...
This simple and cost-effective ding dong electronic doorbell circuit is based on IC 8021-2. The...
This beeper circuit will generate an car-splitting 110dB from 9V. The setup uses a single 74C14...
The control of electric motors is something which interests nearly everyone involved with Meccano...
In the circuit below, 60 individual LEDs are used to indicate the minutes of a clock and 12 LEDs...
The following circuit is an improved version of my original Lightning Detector designed to run on...
When connected to popular Stax Class 1 electrostatic headphones, the design shown in the figures...
In this circuit, the wearer assembly consists of only one lamp, 6V6 or 6L6, which acts as an...
characters left: