Range precision voltmeter electrical schematic in Figure (a) below. Amplifier circuit and a number of high-precision components, which greatly improves the performance range of the voltmeter.
Click here to download the full size of the above Circuit.
IC2 inverting input instrumentation amplifier AD623 using a precision voltage reference source ICl do benchmarks. The positive input of Rl, RPl, R3 dividing the measured voltage is amplified. RPl to zero potentiometer, RP2 potentiometer to adjust the gain, the amplifier output voltage divider resistors R4 connected via a labeled start and end values of the header. Select a range of measured voltage Vin, the starting value V1, the termination value V2, the measured voltage Vin varied within the range of V1 ~ V2. When you enter a standard voltage V1, adjust potentiometer RPl, the output of the amplifier meter is 0V, that is, the start value of the interval voltmeter; input voltage V2 standard, adjust potentiometer RP2, make the header that is full scale termination of the interval voltmeter. Thus, the measured voltage change between V1 ~ V2 at the time, the first table pointer swing in the start and end values.
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.....
characters left: