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Step 3The components
From left to right, these are
1. The schottky rectifier diode. From an old hard drive.
2. The TC105333 integrated circuit. From Microchip.
3. The TPS1101 P-channel MOSFET. From Texas Instruments.
4. 22µF 20V tantalum SMD capacitor. From an old hard drive.
5. 47µF 16V tantalum SMD capacitor. From an old hard drive.
Diodes and tantalum capacitors in SMD packages look almost the same. The diode is distinguished by it being open circuit in one direction, and conducting in the other. The capacitors check out open circuit in both directions, after an initial charging kick.
The schottky diode is distinguished from the ordinary kind by it having a much lower forward voltage drop.
In addition, a 470 K resisor and a 10nF capacitor were also used.
1. The schottky rectifier diode. From an old hard drive.
2. The TC105333 integrated circuit. From Microchip.
3. The TPS1101 P-channel MOSFET. From Texas Instruments.
4. 22µF 20V tantalum SMD capacitor. From an old hard drive.
5. 47µF 16V tantalum SMD capacitor. From an old hard drive.
Diodes and tantalum capacitors in SMD packages look almost the same. The diode is distinguished by it being open circuit in one direction, and conducting in the other. The capacitors check out open circuit in both directions, after an initial charging kick.
The schottky diode is distinguished from the ordinary kind by it having a much lower forward voltage drop.
In addition, a 470 K resisor and a 10nF capacitor were also used.
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