Conţinutul numărului revistei |
Articolul precedent |
Articolul urmator |
410 4 |
Ultima descărcare din IBN: 2022-10-05 16:19 |
Căutarea după subiecte similare conform CZU |
537.962:621.382.2 (1) |
Электричество. Магнетизм. Электромагнетизм (404) |
Электротехника (1146) |
SM ISO690:2012 PENIN, Alexander A., SIDORENKO, Anatolie. Invariant sample-and-hold amplifier to the hold capacitor discharge. In: Moldavian Journal of the Physical Sciences, 2021, nr. 2(20), pp. 170-175. ISSN 1810-648X. DOI: https://doi.org/10.53081/mjps.2021.20-2.08 |
EXPORT metadate: Google Scholar Crossref CERIF DataCite Dublin Core |
Moldavian Journal of the Physical Sciences | |||||||
Numărul 2(20) / 2021 / ISSN 1810-648X /ISSNe 2537-6365 | |||||||
|
|||||||
DOI: https://doi.org/10.53081/mjps.2021.20-2.08 | |||||||
CZU: 537.962:621.382.2 | |||||||
Pag. 170-175 | |||||||
|
|||||||
Descarcă PDF | |||||||
Rezumat | |||||||
The conventional measurement signal sample-and-hold amplifier comprising a sample and hold circuit in the form of a sample switch, a voltage hold capacitor, and a voltage repeater further includes two similar sample-and-hold circuits of reference voltages. The idea of the proposed amplifier is that hold capacitors are equally discharged in all three sample-and-hold circuits. Therefore, an affine ratio for the stored three voltage samples does not change the intrinsic value over a long discharge time. Then, this invariant affine ratio is taken as the measuring signal. A reproducing (recovery) unit, which is also included, calculates this affine ratio. In turn, the included information signal former shaper pre-converts (prepares) the initial measurement signal using reference voltages. Thus, the hold time is significantly increased, while maintaining a short sample time for the given hold capacitor. On the other hand, the affine ratio uses differences and voltage ratios. Therefore, offset errors are mutually reduced. It is possible to implement the proposed sample-and-hold amplifier in the form of an analog chip based on a multiplier and the known multi-channel sample-and-hold amplifier. |
|||||||
Cuvinte-cheie sample-and-hold, affine ratio invariant, offset errors, capacitor discharge, eșantionare și stocare, raportul simplu invariant, erori de compensare, descărcarea condensatorului |
|||||||
|