LM390 Bass Amplifier
Posted on Dec 22, 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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Halloween is coming up and it's time to do some pranks. Everyone likes Halloween and I'm no...
The device comprises two parts: LED control board and LED display board. The two PCBs are...
The circuit can control up to 6 kW of heating, with moderate gain, using a 25-amp triac (SC260D)....
TDA2050 Audio Amplifier circuit diagram. There is a current environmental protection: the signal...
The circuit below is similar to the one above but can be used with a laser pointer to toggle the...
utilize RGB LED lightsources, an optical sensor and feedback controller. The aim of using optical...
Here we`ll discuss how to make an electronic spy bug circuit using two methods, one that consists...
I have been working on driving an analog VU meter based on the sound going out the Raspberry Pi`s...
Figure 1 is a schematic of such an arrangement with four batteries. The diagram in Figure 2 uses...
The Arduino displays the time and date on a LCD (optional) and in the Arduino IDE serial monitor...
Many commercial pest repellers operate in the range of 30 to 50 kHz. My aim was, however, to...
A good quality preamp tone controls, a total of three circuits. We choose to use the NE5532 is...
The vehicle acts in any way at this point electronically - for example, by its metal (change...
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