The analog input is first fed into a fast non-inverting buffer amplifier (OPA353) set up for unity gain which protects the analog-to-digital converter from out-of-range voltages. The ADS830 is a fairly cheap 8-bit analog-to-digital converter which supports sampling clocks from 10kS/s to 60MS/s. It has sort of a 3-stage pipeline meaning that the co
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nversion result available on the digital outputs corresponds to the analog voltage 3 clocks earlier. Since we`re sampling on a constant 10MS/s rate (remember: for lower "sampling rates", the sampling clock is still 10MHz but we select only certain samples before committing them to the USB-FX2 FIFO) this introduces a constant delay of 300ns. This is nothing to worry about most of the time but when comparing the time from digital and analog inputs, it must be remembered that the analog signal lags somewhat behind. The AD_CTL plug not only provides the sampling and latch clocks (they have the same frequency but opposite phase) but also the config for the AD converter allowing to set the sensitivity to 1Vpp or 2Vpp or choosing between internal and external reference. (There is currently no extra plug for an external reference. ) The analog has to be attached to the CON-BNC connector. It must be understood that the input is DC coupled and demands a common mode offset voltage of 2. 5V. This is ideal for 5V single-supply amplifier circuits which operator symmetrically around 2. 5V. However, this is not what one expects when connecting to a "real" oscilloscope. If different signal levels are required, an extra input amplifier and level shifter has to be built (which will probably require an external power supply!).
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....
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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....
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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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