Sample and hold amplifier circuit without external resistance

The sample and hold amplifier circuit structure without external resistance in the figure does not use external resistance. In the steady state, during the internal tracking cycle, the internal logic signal is high-level effective, enabling the follower composed of A1, B1 and A2. Therefore, the capacitor C2 with the ground as the reference is charged […]

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Characteristic curve analysis and application of resistance temperature sensor PT1000

WZP platinum resistance temperature sensor PT1000 is a device for detecting temperature and temperature related parameters by using the characteristics of element electromagnetic parameters varying with temperature. Because of its relatively good linearity, strong oxidation resistance and wide temperature range, its temperature measurement range ranges from – 200 ℃ ~ + 650 ℃. At present, […]

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Design of adjustable programmable amplifier using analog / digital combination

Based on the theory of electronic technology and the design method of analog / digital combination, the implementation method of a programmable amplifier with adjustable gain is designed and discussed, its theoretical analysis is carried out, and the practical application circuit is given. In many data acquisition sites, especially the data acquisition system in small […]

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Characteristics and application analysis of kty series silicon sensor using diffusion resistance technology

For many applications, there are more advanced technologies than traditional thermistors, and traditional technologies are often used frequently only because they have been used in previous designs. Using silicon technology to manufacture temperature sensors is one of the ways to achieve the best reliability, because the behavior of such sensors is as stable as silicon […]

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Design and implementation of Zener diode voltage reference

When you use zener diode for reference design, because zener diode is relatively simple, you can use it to demonstrate the design process, and the problems in use will make you glad to have IC reference. Circuit indicators: VCC = 30V ± 10%, 8.445 VREF 9.555 Δ VREF 200 mV, 100 K Ω rload 200 […]

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What factors should be considered when purchasing electronic connectors

Electronic connectors are often used in various electronic equipment. Due to different use environments, the parameters of the connectors used are also very different. How to select the appropriate connector has become a headache for engineers. However, the types of electronic connectors are so complex, so how to quickly find the connector suitable for their […]

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Design notes a simple ratio technique for measuring very low resistance

The most common application of very low value resistors (i.e., milliohm (m Ω) and below) may be current control circuits, whose low value can reduce power loss. For these applications, a tolerance of about 10% – 20% is sufficient. However, even under these tolerances, it is quite difficult to accurately measure very low resistance values, […]

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