4 ms·
Only because odd components aren't marketable. There used to be 4-terminal MOSFETs, they weren't sold after ICs became normal. Never heard of a multi emitter tr
by direwolf20 9mo ago
Only because odd components aren't marketable. There used to be 4-terminal MOSFETs, they weren't sold after ICs became normal. Never heard of a multi emitter transistor being sold discretely but it's possible.
- jacquesm 9mo agoI use dual gate FETs frequently for all kinds of tricks and they're super useful. Is that what you had in mind?
- squarefoot 9mo agoDual gate mosfets were a godsend when building RF/IF mixers or preamps. Luckily I have a small stash as they're almost unobtanium and costly these days, but for most uses such as mixers and preamps they can be swapped with a pair or normal jfets in a cascode configuration like this one: https://i.stack.imgur.com/6Nyhg.gif https://i.stack.imgur.com/6Nyhg.gif
- cbdevidal 9mo agoToday I learned you can build an entire freaking CPU out of 555s lol https://hackaday.com/2011/08/05/building-a-computer-out-of-555-chips/ https://hackaday.com/2011/08/05/building-a-computer-out-of-5...
- jacquesm 9mo ago> Dual gate mosfets were a godsend when building RF/IF mixers or preamps. exactly :) BF901 FTW.
- analog31 9mo agoCoincidentally, there were vacuum tubes with dual grids for mixer and AGC applications.
- buescher 9mo agoAnd there's someone with a stash of those too. Dual-gate mosfets are one of the ways you know something's been in the back catalog way too long.
- Zardoz84 9mo agoOmg... and thinking that my mother throws a huge stash of components like that. my father was an electrical engineer and ham radio. At least, I managed to save a stash of electronic valves and some analog equipment like an old oscilloscope that could be in a museum (I saw a similar model in a museum).