sample-and-hold circuit

sample-and-hold circuit

[¦sam·pəl ən ′hōld ‚sər·kət]
(electronics)
A circuit that measures an input signal at a series of definite times, and whose output remains constant at a value corresponding to the most recent measurement until the next measurement is made.
References in periodicals archive ?
Next, one may compare this to the output of a sample-and-hold circuit that has a low impedance load, as shown in Figure 5.
The resulting poor hold duration manifests itself as an increasing inability of the sample-and-hold circuit to isolate the periodic sampling function discrete-line spectra from the output of the sample-and-hold circuit.