Low battery indicator
Posted on Jul 30, 2012
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.....
.
Using inexpensive components, you can fit a simple probe circuit into a pencil-sized enclosure....
This is a CMOS IC (CD4033) based circuit which can be used to detect presence of mains AC voltage...
This circuit provides for accurate half wave rectification of the incoming signal. For positive...
In this circuit Ql, Q2, Rl, and CI form a multivibrator. The square wave that results from the...
The crime prevention bell device that I produced about 20 years ago works still in the active...
Achieve communication between MCU and accelerometer trough I2C nor SPI. I observed that shorting...
The power supply is pretty mundane. The 110VAC comes in on connector N17 and is hooked in series...
This chapter contains circuit diagrams for several power supplies for pulsed solid state lasers....
Here is the circuit diagram of a simple 3 band graphic equalizer circuit using a single IC and...
For a while I have wanted to add a facility for hazard flashers to my Bonneville SE. I have read...
Switching power supply drive medium power applications in PM4040F bridge circuit as shown below:...
F733 Integrated wideband amplifiers common-emitter group total wideband amplifier internal...
characters left: