Experiments with coupled circuits
Posted on Feb 6, 2014
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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 1 square meter antenna has radiation resistance of about 10 nanohoms, making the 0.4 Ohm...
This Nicad battery tester discharges the test battery at a rate of 500 mA. When the endpoint of...
Most mobile chargers do not have current/voltage regulation or short-circuit protection. These...
This LED flasher give similar circuit with the previous transistor LED flasher, but this circuit...
This is probably the simplest radio transmitter that you will find anywhere. It has a total of...
Q1 and Q2, as well as T1, determine how much wattage the inverter can supply. With Q1, Q2=2N3055...
All the naturally occurring phenomena like sound, temperature and pressure etc, are analog in...
The AD7740 is the world`s smallest, lowest-cost, 12-Bit accurate VFC. Since this is a synchronous...
The Muntz one-tube design can be considerably improved by adding an audio preamplifier stage....
You might find yourself needing a low power H bridge for driving a motor like I once did. The 555...
This hack replaces the thermistor (temperature sensor) of a hot tub with an adjustable value that...
Four 595s together to drive 7-segment displays and alsoadded code to acceptinput from the PC....
A commitment by the MIC5158 to control tasks, a plurality of external N-channel MOSFET parallel...
AC motor control circuit sprinkler If the circuit in the motor is an AC motor can be designed...
Figure 3-16 is a low-noise preamplifier equalizing HA12017 consisting playback circuit, the...
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