Melody generator schematic
Posted on Jun 3, 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 project is intended for controlling mains powered disco lighting, although there are many...
The circuit consists of a frequency modulated oscillator, an audio preamplifier with pre emphasis...
Audio Jammer Noise generator for detector audio circuit
The current out is Iqut—Vin/R. For negative currents, a PNP can be used and, for better...
This circuit uses a Hall-effect sensor, consisting of an IC that resides in a small gap in a...
1. THE INPUT CLOCK frequency fed into this circuit is divided by 2n-l. The circuit consists of...
As you see in the circuit above the four pins "Controller pin 1", 2, 3 and 4 will control the...
My Machtech tester is capable of metering the capacitors, but is very complicated to measure...
The following diagram is a very easy and simple electronic combination lock based on IC LS7220....
A classic amateur radio transmitter topology, the oscillator-amplifier (sometimes called master...
Multisim is the simulation software of circuit based on SPICE, SPICE Simulation Program with...
The electronic dog repellent circuit diagram below is a high output ultrasonic transmitter which...
This simple circuit produces a beeping sound that lasts for around 3 seconds whenever you make a...
As shown by the block diagrams in Figure 1, overall signal flow in this five-input mixer was...
A homebrew 2M transceiver I wanted to use it mobile so I wouldn`t have been able to use a fist...
This HD TV UHF wideband amplifier (Ultra High Frequency amplifier ) has a total gain of 10 to 15...
4V flat monitor high voltage power supply circuit diagram innocentA wide range of 7 ~ 40V turn...
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