This is higher input or output for L200 voltage regulator circuit. This circuit is designed to solve the problem that occurs when the input or output voltages are higher than the device can produce. This circuit uses the external components. Here is the circuit : The transistor is used to absorb the excess voltage when there are high input voltage
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. The SOA of the preregulation transistor and the dissipated power should be calculated. The maximum input volage that can be reached if we use BDX53 is 56 V, so the Vce on transistor is 20V with load current o 2A the operation point remains inside SOA. The ripple at the input of the circuit is reduced by preregulation, so it can recieve an output voltage with negligible ripple. When we need a high output voltage, we can use a second zener, Vz, that is used to refer an IC`s ground pin to a potential other than zero. To protect the output from short circuit, this circuit uses diode D1. [Source: STMicroelectronics Application Note] This is digital voltage selection control circuit. This circuit uses L200 Regulator. It can be used to regulated the output voltage digitally. Here is the circuit : A combination of P2, R3, R2, and R1 with R5 form voltage divider Continue reading †’. Buffering for the zener is provided by the impedance matching and current amplifying characteristics of the emitter follower and draw less current from it. To a Zener regulator, it`s a useful adjunct. The capacitor on the right circuit is used Continue reading †’. The figure below show us a zener regulator. The essential component is the dropping resistor R which the value given by (V-Vo)/I, where I is the desired output plus 10%. As long as the supply voltage V is constant, the Continue reading †’. This is a Low-dropout (LDO) Regulator circuit,...
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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