DIY Bench Power Supply #11 – Heat Transfer between Transistor and Heatsink / Thermal Resistance Pt2

Please support my content creation by using my Amazon Store:

http://astore.amazon.com/m0711-20

—————————— Click “Show more” ——————————————-
In this video I examine the various materials used to transfer heat from a TO-3 power transistor (2N3055) to the heatsink and how their thermal resistance can affect this.

Materials used:
* Adhesive mica and heatsink compound / paste
* Heatsink compound only
* Metal to metal with no insulating / thermal transfer material
* Mica TO-3 washer only
* TO-3 silicone washer only
* TO-3 silicone washer and heatsink compound
* Active cooling with a fan

Then a stress test of the 2N3055 Transistor…with and without cooling

Understanding the 2n3055 transistor data sheet:

http://www.brighthubengineering.com/diy-electronics-devices/122839-understanding-2n3055-transistor-datasheet-explored/?PageSpeed=noscript

2N3055 Power Transistor data sheet:

http://www.onsemi.com/pub_link/Collateral/2N3055-D.PDF

Make a Universal Power Supply With Outstanding Features – Adjustable 1 to 25 Volt DC Power Supplies – Circuit Schematic Diagram and Plans –

http://www.brighthubengineering.com/diy-electronics-devices/61881-make-a-universal-power-supply-with-outstanding-features/?PageSpeed=noscript#imgn_0

Heatsinks and thermal resistance:

http://sound.westhost.com/heatsinks.htm

Power Transistors and Heat Sinks –

http://www.learnabout-electronics.org/Amplifiers/amplifiers51.php

——————————————————————————————————
My website and forum:- http://www.mjlorton.com
Donations and contributions:- http://www.mjlorton.com
My techie channel MJLorton – Solar Power and Electronic Measurement Equipment – http://www.youtube.com/MJLorton
My Techie Amazon Store: http://astore.amazon.com/m0711-20
My other channel VBlogMag – For almost any topic under the sun! – http://www.youtube.com/VBlogMag
My VBlogMag Amazon Store: http://astore.amazon.com/vblogmag-20
——————————————————————————————————
===================================================
Video sponsor, Pass Ltd – their websites:
At checkout use the discount / promotion code “mjlorton” for 5% off.
http://www.tester.co.uk/?cmid=QmhzQjcxYjVlc1E9&afid=bFcwbzliNzVDc289&ats=K2EyUjZNTDh3UTA9 – Test Equipment and Test-meter suppliers and
http://www.calibrate.co.uk/?cmid=QmhzQjcxYjVlc1E9&afid=bFcwbzliNzVDc289&ats=S3Yxd2tOMjVISzA9 – Calibration and service of test equipment
===================================================
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
Bitcoin (BTC) Donations: 1K7PeF55e7ssE7W3WVCoa7c4j2PHzy6ASv
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
**********************************************************************************
Music clip from Youtube Music Library – Phase Three by Huma-Huma
**********************************************************************************