A star-delta switch automatically a start-up circuit
Posted on Mar 28, 2007
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 ·circuit includes a peak detector that irrunediately drives the readout to any new higher...
This circuit switches its dc/dc converter, IC1, off whenever the large filter capacitor, C6, has...
The reference current is fed from the supply voltage via Rl, to the inverting terminal, and the...
The 7490 counter is a negative edge triggered decade counter that counts from 0 to 9. Pins CLKB &...
had to rewire a boat trailer due to damaged wiring and lights. I`m using a standard 4 pole flat...
This is a programmable alarm timer ambit that uses alone LEDs to announce hours and minutes. 12...
This stage may be driven by another resistance coupled amplifier stage in which case the resistor...
Here is a easy circuit of a DC to DC converter using LM317T IC. LM317 is a very famous IC comes...
Here is the schematic of a water level alarm circuit. The circuit will work as a water level...
This is a very simple AM radio circuit using only two transistors. The coil L1 and variable...
The circuit diagram shown here is of a simple DC power delay circuit that is based on an SCR....
Circuit works: Rp1 ~ Rp13 scale resistance to the keyboard, but also the oscillator timing...
220V AC by VD1-VD4 bridge rectifier, all the way to eight lights H1 ~ H8 supply of electricity,...
Child lock voltage comparator 555 monostable circuit, a counter, JK flip-flop, UPS power supply...
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