Bi-Color Indicator Circuit
Posted on Aug 6, 2012
New Circuits
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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.....
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The electronic lantern control circuit adds high-efficiency dimming and flashing to an existing...
This figure shows a one-of-two switch with a sunnning amplifier. The video source"s line can be...
When power is first applied, three things happen: the light-driving transistor (Ql) is switched...
An outside horn-type speaker works best with the circuit. However, such devices require a great...
Up Alarm can be used to provide a audible alarm for when the sun comes up or it can be used in a...
The BA3822LS BA3822FS BA3823LS and BA3824LS are monolithic, five-point stereo graphic equalizer...
This page contains GIF images of the circuit diagram for the Solution interface, the PCB artwork,...
The so-called regenerative effect of a 4-quadrant inverter. Yup you will need to dissipate that...
When the sun position is changing so does the illumination level on the LDRs and the input...
This article describes the The 555 Timer Design (NE555N). The content is very simple, very...
RF Cafe visitor David M. wrote to ask that I scan and post this article from the January 1963...
Designed to simulate by electronic means thetossing of a coin, the circuit is based upon a 4049...
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