Mobile phone crystal 3.2*2.5mm 3225 26M (26.000MHZ) 7.5PF 10PPM 20PPM 30PPM
Single chip microcomputer STM32L151CCU6
Photocoupler
The general LED driving circuit can be divided into two types, one is series driving, using the inductive DC-DC boost conversion principle, all the LEDs are connected in series; the other is parallel driving, using the capacitive type of charge pump According to the principle of pressure, all LEDs are connected in parallel.
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