Frequency-detecting-comparator
Posted on Jul 8, 2012
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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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This circuit operates a relay each time a sound of sufficient intensity is made, thus one clap of...
The following diagram is the battery charger schematic for 6V Gel Cell battery type. Component...
I have finally finished my first prototype PCB but I am a bit worried about the amount of heat...
This 860 MHz Phase Locked Loop (PLL) oscillator circuit is for 1200 MHz transverter`s local...
This circuit allows an ECG signal to be displayed on an oscilloscope. Opamps IC1a, b and d form...
The LinkSwitch-LP family is designed to replace inefcient line frequency linear transformer...
The SA608 is a low voltage high performance monolithic FM IF system incorporating a mixer...
A simple triangle/squarewave generator using a common 1458 dual op-amp that can be used from very...
DC Power Supply 9 Volt Regulator, that can give current get about 1 Amp arrive at 2Amp. I sees...
This circuit is able to handle nine independent telephones (using a single telephone line pair)...
AN79 Linear Technology AN79 modifies methods presented in AN74, permitting verification of 30...
This is a guide to becoming a techno rebel: a guide to becoming a radio pirate and raiding the...
A single pulse signal generating circuit Shown as a single pulse signal generating circuit,...
As illustrated, the switch circuit by capacitive oscillator, the integration network, and a...
Characterized by a steady flow of power when the power supply voltage fluctuations or load...
Circuit shown in Figure 3-14. SA switch placed in the work position, the motor is transferred;...
Current three-phase motor phase protection circuit, as shown in FIG. 3 homemade small current...
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