With Instructables you can share what you make with the world and tap into an ever-growing community of creative experts.
share what you made with text, photos, video, and files
gather your favorite instructables together
in this instructable i will show you how to make a very simple NPN transistor tester.
a NPN transistor (to test) a 10K OHM resistor a 470 OHM resistor a LED a on/off switch and a 9V battery (5-12V)
here are the schematics. and a picture of my finished product.
We have a be nice comment policy. Please be positive and constructive.
Light Sensing LED Flashlightby MITinventorbot
Light Up Halloweenby Geek07Boy
Electronic Sensor & Component Testerby Jonathanrjpereira
DANCING LIGHTSby Techgenie
555 FLASHER (1:1 cycles) & (as independent variable cycles)by frapedia
Arduino UV LED PCB Exposure Boxby bulb66
Activate Lights And Other Appliances With Touch And Knocks (under 2$!)by DangerousTim
Fun with transistorsby Geek07Boy
HOW TO MAKE DANCING LED'Sby pranjal12
Darkness detectorby Mahitchima
Download our new apps for iOS, Android and Windows 8!
© 2015 Autodesk, Inc.
By clicking "Create Account" you are indicating that you have read and agree to the Terms of service.
Already a member? Login »
Enter the email associated with your account and we will send you your username and a temporary password.
Not a member? Sign Up »