Transistors

Transistors are just like Transformers. Only 5 letters difference.

Transistor Building Blocks

Circuit_Building_Blocks

Tips/Techniques

Darlington Transistors have Internal Resistors

See also: (sziklai vs. darlington)

https://circuitcellar.com/resources/darlington-vs-sziklai-pair/

Never Trust Data Sheets Power Mosfet ratings

https://www.eevblog.com/forum/projects/50w-really/msg5449229/ Perhaps I should have a page just for traps in data sheets.

Measuring R(ds)ON of an N-FET with Two Meters

Demonstrating a measurement of R(ds) On with two meters. Apologies for the vertical video.

• https://forum.allaboutcircuits.com/threads/measuring-mosfets-rds-on.181819/
• http://web.archive.org/web/20220127031735/https://www.engineersgarage.com/testing-mosfet-part-16-17/

It's possible, but be aware of what voltage your meter outputs, what is required for conduction, and what resistance to expect.

Misc

• https://www.eevblog.com/forum/projects/why-transistor-vbe-drops-when-transistor-is-in-active-region-bc547-ibconstant/ Curve tracer question: Does Vbe change when Vce increases (on a BC547)? (Contrary to popular knowledge)