Use your printer port as a high-current ammeter
New Circuits
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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 amplifier uses a grounded grid circuit with either the Eimac 3CX1000A7 or 8877, ceramic/metal...
This is the circuit diagram of Line Follower / Line Tracker robot. The circuit taken from the...
Q1 and Q2. to form a table, on the left side, list the the four possible states of Q1, Q2; on the...
Interested in starting an intro electronics project using a IR sensor and am having a little...
Power a 12v fan using a darlington so I can control the speed from an Arduino. When I wire up as...
Q1 and Q2 form an ALL-ON ALL-OFF circuit that in the off state draws no significant current. P1...
This LM1830 low level detector can use an audio indication (speaker ) or a visual indicator (LED-...
This circuit controls resistive and inductive loads up to 2, 500W. Its main functional device is...
This low-cost burglar alarm employs a 12V strobe light and a truck reversing horn as the visible...
This circuit is easy to recognise by the three equal-value capacitors and two equal-value...
By the transistor VTa, VT4, sense resistor Ro-current protection circuit and other components....
Common collector amplifier via a DC and AC (3) common-collector amplifier circuit DC and AC path...
Driving at night, when there is a vehicle rendezvous, according to traffic regulations prescribed...
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