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A 7530 in SOT-89-3 package is good for building the exact replica of the PFM module. Here is the application circuit diagram of A7530 (A7530K3R-XXY series) from AiT Semiconductor Inc. Type & Value of ...
SIM800L GSM Module; Crystal Oscillator (frequency depends on microcontroller) Resistors (various values for sensor biasing and circuit protection) Capacitors (various values for power supply filtering ...
A high-pass filter is a circuit that uses the properties of a resistor and capacitor to filter specified high frequencies from the input side to the output side. In the event of a capacitor failure, ...