parts_faq
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parts_faq [2016/06/15 12:43] psykhaze [What type of crystal do I need?] |
parts_faq [2016/06/15 12:47] (current) psykhaze [What is the correct polarity of the (resistor / capacitor / diode / etc)] |
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| ====== Parts FAQ (Frequently Asked Questions) ====== | ====== Parts FAQ (Frequently Asked Questions) ====== | ||
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| ===== What wattage resistors should I buy? ===== | ===== What wattage resistors should I buy? ===== | ||
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| **Resistors can be installed in any direction**. | **Resistors can be installed in any direction**. | ||
| - | Smaller value capacitors (i.e. usually under 1 uF) generally have no polarity. Anything above 1 uF is typically an electrolytic capacitor, and it will have a polarity marking. Most often the "-" side is marked with a big stripe, although sometimes it's the "+" side that is marked. (Strangely, the "+" side seems to be marked on capacitors made in U.S.A.) | + | **Smaller value capacitors (i.e. usually under 1 uF) generally have no polarity**. **Anything above 1 uF is typically an electrolytic capacitor, and it will have a polarity marking**. Most often the "-" side is marked with a big stripe, although sometimes it's the "+" side that is marked. (Strangely, the "+" side seems to be marked on capacitors made in U.S.A.) |
| **//Diodes absolutely must be installed in the right direction//**. Diodes have a stripe on the cathode side. | **//Diodes absolutely must be installed in the right direction//**. Diodes have a stripe on the cathode side. | ||
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| ===== I can't find a bridge rectifier to fit the PCB's. ===== | ===== I can't find a bridge rectifier to fit the PCB's. ===== | ||
| You can substitute four 1N4001 (or any of the 1N400X series) for the bridge rectifier, they will handle more than enough current. | You can substitute four 1N4001 (or any of the 1N400X series) for the bridge rectifier, they will handle more than enough current. | ||
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| ===== What Power supply should I use, and how much power should it have? ===== | ===== What Power supply should I use, and how much power should it have? ===== | ||
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| Yes, 1N4004 is a replacement for 1N4002, it's just a type for higher Voltages (100V for 1N4002 vs. 400V for 1N4004). Any 1N400X diode will work in place of any other 1N400X diode -WITH A SMALLER NUMBER- Do replace a 1N4002 with a 1N4004 Don't replace a 1N4004 with a 1N4002 | Yes, 1N4004 is a replacement for 1N4002, it's just a type for higher Voltages (100V for 1N4002 vs. 400V for 1N4004). Any 1N400X diode will work in place of any other 1N400X diode -WITH A SMALLER NUMBER- Do replace a 1N4002 with a 1N4004 Don't replace a 1N4004 with a 1N4002 | ||
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| ===== PIC Stuff ===== | ===== PIC Stuff ===== | ||
parts_faq.1465994605.txt.gz · Last modified: 2016/06/15 12:43 by psykhaze
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