[mythtv-users] IR Transmitter Components, Need these double checked- Urgent!

[Chris Germano]

I just went out and bought a bunch of components to build an IR receiver and 
transmitter for my pvr. Here are a couple questions, that I really need some 
info on:

For the lirc.org schmatic for a the 'improved' transmitter 
(http://www.lirc.org/improved_transmitter.html),

-The transistors mentioned on that schematic are NPN & PNP, now what kind of 
transistors are they? I bought the generic "Switching Transistors" and the 
larger transistors that have that heat sink which are for power amplifying 
since the docs say low-medium powered transistors, but that could mean both. 
So would it be the normal transistors 
(http://www.radioshack.com/product.asp?catalog%5Fname=CTLG&category%5Fname=CTLG%5F010%5F005%5F004%5F001&product%5Fid=276%2D1617) 
or the powered 
one(http://www.radioshack.com/product.asp?catalog%5Fname=CTLG&category%5Fname=CTLG%5F010%5F005%5F004%5F005&product%5Fid=276%2D2020)?

-As far as the diodes go on the same circuit, the docs mention "silicone 
only" not germanium, and so I have a pack of "Switching Diodes 1N914 1N4148" 
- Silicon #246-1122, as well as some "iN4003 Micronmini Silicon Diodes 
#276-1102". Any idea which one I should use for all those diodes on the 
schematic?

-1/2 watt resistors should be fine correct, I don't need 1/4 watt (shouldnt 
make a diff anyway am I right?)

-The schematic states it needs a 4000uF capacitor, would something around 
that uF work? Also does it matter if they are polarized or not?

Sorry for all the questions, the author of that schematic sure assumes a 
lot, and I don't want to open all my components and put it together to find 
out it doesnt work.

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