Alarm power supply circuit
Posted on Feb 6, 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.....
.
A 2N3904 in the base circuit sets the `Q' point of the amplifier. FM subcarrier audio at 4.5 MHz...
The advent of new high-speed technologies and the growing computer capacity provided realistic...
An automatic control maintains a lamp at a constant brightness over a wide range of supply...
This text describes preliminary plans for a frequency meter for a bat detector. It measures the...
This inverter circuit can be used to power electric razors, stroboscopes and flash tubes, and...
The unit is designed around an ordinary op-amp and easy to obtain parts. Reverse engineered...
Here is the schematic for the circuit, including the connection to the piezo hit sensor. For...
The idea was to show time passing, but instead of a traditional clock face or digits or lights...
This circuit will flash a bright red LED (5000 mcd) as an attention getting device or fake car...
Using this schematic I doubled the range of my IR LED, the power drawn in the circuit is now...
The ectronic fishing shrimp machine circuit is composed of the astable oscillator, inverter...
AM This circuit is tested and functionable. LM389 integrated circuit as the core element, the...
As shown for the basic connection circuit ISO120/121 signals and power supply. Each power supply...
characters left: