Sampling device
A technology of sampling device and sampling unit, which is applied in the direction of output power conversion device, digital measurement technology for measurement, instruments, etc., can solve the problem of low stability of output voltage of power supply and sampling reference circuit, and difficulty in guaranteeing the accuracy of sampling signal and other problems, to achieve the effect of good load transient response performance, low quiescent current, and high precision
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[0034] Such as figure 1 As shown, the present embodiment provides a sampling device, comprising:
[0035] Sampling unit 1, collecting the current signal and / or voltage signal of the main circuit;
[0036] The processor unit 2 receives and processes the current signal and / or voltage signal collected by the sampling unit 1, and sends corresponding sampling data, program data and start-up operation data;
[0037] The storage unit 3 receives and stores the sampling data, program data and start-up operation data transmitted by the processor unit 2;
[0038] The power supply unit 4 provides electric energy for the sampling unit 1, the processor unit 2 and the storage unit;
[0039] The power supply unit 4 includes a main power supply circuit 41 and a sampling reference circuit 42. The main power supply circuit 41 includes a low-dropout voltage regulator 412, a first processing circuit 411 connected to the input end of the low-dropout voltage regulator 412, and a first processing c...
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