Gag 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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The controller uses one or more ordinary silicon diodes as a sensor, and uses a cheap opamp as...
It is quite easy to get a watt or more with very simple equipment, but to get more than 5 watts...
The output voltage changes approximately linearly up to 20 KV as the input voltage is varied from...
This configuration utilizes the wide bandwidth aod speed of HA-2540. plus the output capability...
Here we have an astable oscillator built around 555, which gives an alarm tone of 1. 8 KHz...
Here is the circuit diagram of a battery eliminator circuit that can be used as a replacement for...
This simple circuit can give regulated 4. 7 volts for charging a mobile phone. USB outlet can...
A while ago I got an email asking for the schematic of a circuit to detect cut phone lines. It...
At many situations we need to display the amount of battery charge through some kind of...
This circuit has can to turn down a light bulb arrives at 100W. If Triac there is tall...
This low power fm transmitter is designed to use an input from another sound source and transmits...
One of the outstanding problems in the design of vacuum-tube oscillators is that of keeping the...
Circuit shown in Figure 3-166. It uses the button control. When start forward, press SB], the...
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