Uploaded December 2020 | Updated September 2026, 2 weeks ago
#101 In this video I look at what can be done when you don't have a big enough transistor - use a bunch driven in parallel of course! I look at various ways of equalizing the currents that run trough the multiple parallel transistors and what sort of problems can occur when this sort of measures are not implemented.
Miniseries:
Ep1 Parallel BJT: youtu.be/Dhm3pXwu5V0
Ep2 Parallel FETs: youtu.be/l_GPY1MqLy0
Ep3 Series: youtu.be/mcgp2mUIpEE
References and further reading
- The Art of Electronics; Horowitz, Hill; Cambridge; Cap 2.4.4
MosFet datasheet: irf.com/product-info/datasheets/data/irf820a.pdf
Special Thanks to all my supporters on Patreon! Especially @afiskon and Ralf B.!
If you liked this video be sure to check out my other videos and you can also subscribe to be up to date with all the new ones!
If you want to support the creation of more and better videos please consider checking out: patreon.com/feszelectronics
#101 In this video I look at what can be done when you don't have a big enough transistor - use a bunch driven in parallel of course! I look at various ways of equalizing the currents that run trough the multiple parallel transistors and what sort of problems can occur when this sort of measures are not implemented.
Miniseries:
Ep1 Parallel BJT: youtu.be/Dhm3pXwu5V0
Ep2 Parallel FETs: youtu.be/l_GPY1MqLy0
Ep3 Series: youtu.be/mcgp2mUIpEE
References and further reading
- The Art of Electronics; Horowitz, Hill; Cambridge; Cap 2.4.4
MosFet datasheet: irf.com/product-info/datasheets/data/irf820a.pdf
Special Thanks to all my supporters on Patreon! Especially @afiskon and Ralf B.!
If you liked this video be sure to check out my other videos and you can also subscribe to be up to date with all the new ones!
If you want to support the creation of more and better videos please consider checking out: patreon.com/feszelectronics

![Timeless ICs - Linear Regulators
#255 In this video I look at some of the oldest ICs that are still in use and production today. These are not the best in their class but they are well known and easily accessible. Most of these components are a common site both in older and newer devices and well suited for their job.
Related videos:
uA723 DIY BenchSupply [1/2] - https://youtu.be/ZZFIRvxPbyQ
uA723 DIY BenchSupply [2/2] - https://youtu.be/8E8V7Uw-3eg
Discrete Supply build - https://youtu.be/8ImywucbnKM
Supply teardown - https://youtu.be/xL2QDJvKV-I
Datasheets and References:
https://ve6aqo.com/Manuals/uA723_Application_Note.pdf
www.ti.com/lit/ds/symlink/ua723.pdf
https://www.ti.com/lit/ds/symlink/lm317.pdf
https://www.ti.com/lit/ds/symlink/lm137.pdf
https://www.ti.com/lit/ds/symlink/lm78l.pdf
https://www.ti.com/lit/ds/symlink/lm1117.pdf
https://www.st.com/resource/en/datasheet/ld1117.pdf
Special Thanks to all my supporters on Patreon!
If you liked this video be sure to check out my other videos and you can also subscribe to be up to date with all the new ones!
If you want to support the creation of more and better videos please consider checking out: https://www.patreon.com/feszelectronics Timeless ICs - Linear Regulators](https://i.ytimg.com/vi/EBFM2wS0GXo/mqdefault.jpg)








