2011 Aug 26 2N5172 NPN Transistors

2011 Aug 26 2N5172 NPN Transistors

Here is a picture of a box of 2000 of them.

I've used these 2N5172 transistors in projects, and I was able to get one to work in a FM wireless microphone at 90 MHz, but I had to try several before I found one that would work. They will do much better if the frequency is below 60 MHz, which makes sense since their fT is rated at 120 MHz.

Silicon Saver Joule Thief
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See my blog here for other circuits.

Free Energy Collector

TLAs
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This is a list of TLAs, Three Letter Acronyms. I will add to this when I think of a new one. The rule is it must be three letters. Comment with a new TLA is welcome, I will add it and delete the comment.

A- ALS
B-
C-
D-
E- EOD
F-
G- GED
H- HAL
I- IBM
J-
K-
L- LED LNG
M-
N-
O-
P- PGA
Q- QRM
R- RPM
S-
T- TKO TLA
U- USA
V-
W- WPA WEP
X-
Y-
Z-

There could be dozens of Greek letter fraternities and sororities here.

PS-0-to-10V-LM317

See my Dec 31, 2009 blog for an update with more pictures and the final schematic.

WirelessMicSquareLoop.gif

WirelessMic.gif