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How important is the resistor between arduino pin and npn transistor base? lpbug 3 708 Last post August 16, 2013, 08:08:06 am
by MarkT
does a "normally closed" transistor or similar exist? « 1 2 » yesyes 15 708 Last post October 23, 2013, 12:02:09 pm
by joshuabardwell
program Loop stops ramdomly on stand alone atmega328p RodneyD 12 708 Last post November 15, 2013, 12:35:41 pm
by RodneyD
Phototransistor or Photodiode calvingloster 7 708 Last post November 17, 2013, 04:33:25 pm
by MarkT
Why do I need a transistor to operate a 5v Relay? « 1 2 » marcalcc 15 708 Last post December 10, 2013, 12:05:51 pm
by jasmine2501
[Help on searchig] IC for switching ON \ OFF « 1 2 » tsunamy_boy 24 708 Last post June 24, 2014, 02:17:19 pm
by tsunamy_boy
Connecting to 3.3V accelerometer liudr 6 707 Last post May 27, 2011, 02:02:59 pm
by liudr
Switch Placement ParallelLogic 5 707 Last post June 09, 2011, 07:19:10 pm
by ParallelLogic
12v common cathode LED strip help ttyrawa 3 707 Last post April 05, 2012, 07:24:19 am
by sirbow2
Cannibalizing Printer and Satellite Decoder for Spares. sams88 3 707 Last post August 16, 2012, 01:00:36 pm
by sams88
HELP! problems with audio detection circuit jameshutton 12 707 Last post November 25, 2012, 03:13:50 pm
by oric_dan
Changing ceramic capacitors to electrolytic dmm002 6 707 Last post December 03, 2012, 09:45:25 pm
by oric_dan
Any tricks to keeping pins in breadboard? bobmcinnis 6 707 Last post December 15, 2012, 12:31:37 am
by MichaelMeissner
hf receiver compatible with arduino uno anasch 4 707 Last post April 02, 2013, 09:46:44 pm
by Docedison
interfacing dtmf with atmega644p vinay_4evrmanutd 7 706 Last post March 27, 2011, 10:07:29 pm
by floresta
Powering more than 1 thing from 5 volts Dylan552 7 706 Last post August 24, 2011, 02:02:48 pm
by retrolefty
need help completing this circuit AJ Weber 10 706 Last post April 28, 2012, 11:42:29 pm
by krazatchu
RFID Reader library uberdum50 1 706 Last post August 26, 2012, 07:14:03 am
by Riva
AC relays - get relay that can handle double the voltage? harleydk 9 706 Last post March 18, 2013, 11:35:51 am
by kf2qd
female 0.1" headers for high current GoingForGold 3 706 Last post March 29, 2013, 01:18:33 pm
by CrossRoads
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