The Micro SD TF Card Module is SPI interface via file system driver, microcontroller system to complete the MicroSD card reading and writing functions.
The HA17555 is a designed for accurate time delays or oscillations. It provides both of trigger terminal and reset terminal in order to enable a wide scope of application including Mono Multi Vibrator and Astable Multi Vibrator.
These epitaxial planar transistors are mounted in the TO-126 plastic package. The PNP types are the BD136 and BD140, and the complementary NPN types are the BD135 and BD139.
The BC558 is a PNP transistor hence the collector and emitter will be closed (Forward biased) when the base pin is held at ground and will be opened (Reverse biased) when a signal is provided to base pin.
NTC-10K 1% 3470 temperature temp sensor probe thermometer waterproof new click photos to enlarge description 100% brand new and high quality stainless steel sheath and waterproof measurement range: -30 to 120 °c length of wire: 600 mm size of probe: 5 x 2
The HA17324A is a quad operational amplifier that provide high gain and internal phase compensation, with single power supply. 14 Pin DIP Package. It can be widely used to control equipment.