Car battery condition checker
Posted on Sep 19, 2012
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 is a very basic power failure lighting circuit based around a relay. This simple circuit has...
As dusk begins to -fall, the sensor (a cadmium-sulfide light-dependent resistor or LDR) operates...
When power is first turned on, two of the LEDs are on and the other two remain off until the...
Using an oscillator running at 455 kHz, the metal-detector circuit produces an indication on the...
It is obvious, a slice of SM2965 includes canonial 80C32, FLASH, E2PROM 28SF512, SRAM static data...
A logarithmic resistor ladder is an electronic circuit composed of a series of resistors and...
The following graph shows the measured temperature rise above ambient for a typical range of...
I have been hacking the Dyna PAS chassis with various cascoded and cascaded phono circuits all...
This circuit is the variable output switching regulator for general purpose applications. An...
The keypad circuitry is based around a PIC1652 microcontroller that was manufactured by General...
The device presented here can generate a complementary clock signal at frequencies of 10Hz to...
If a linear feedback amplifier contains reactive elements, and at some frequency the loop gain Ab...
The power supply was built into the base of the mic which can lead to hum issues despite the...
This circuit is used to maintain the level between two fixed points. Just transform K1 contacts...
As shown in FIG inverted to adopt IC1MAX868 and CMPSH-3S consisting of four times the pressure...
BISS0001 is a sensor signal processing integrated circuit with higher performance, it is...
characters left: