Re: An SCR by any Name....Re: 48kW DRSSTC: international names

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Tim_S" <stm800@xxxxxxxxxxxx>

you asked as my book was handy.so:

>  >     (Historically: 'thyristor' (as a word) was derived 'thyratron',
>  >      a mercury vapor/liquid device of Very Similar Use, tho
>  >      different physics.  If Pressed I shall fetch my
>  >      GE SCR Handbook, and....  8)

GE scr manual 6th edition copy 1979...section 1.1..

the name thyristor defines any semiconductor switch whose bistable action
depends on( p-n-p-n) regenerative feedback.
Thyristors can be 2,3 or 4 terminal devices, and both unidirectional and
bi-directional devices are available.

section 1.2
the silicon controlled rectifier (scr) is by far the best known of all
thyristor devices.Because it is a unidrectional device
(current flows from anode to cathode only) and has 3 terminals
(anode,cathode,control gate),the scr is classified as a
 reverse blocking troide thyristor. other members of the reverse blocking
triode thyristor family include the
silicon unilateral switch (SUS), the light activated silicon controlled
rectifier (LASCR), the complementary scr(CSCR)
the gate turn moff switch (GTO) also known as the latching transistor, and
the programmable unijunction transistor(PUT).
the silicon controlled switch (SCS) is a reverse blocking tetrode thyristor
(it has 2 control gates)while the shockley diode
is a reverse blocking diode thyristor.bi-directional thyristors are
classified as (p-n-p-n) devices than can conduct current in either
direction;
commercially available bidirectional triode thyristors include the triac
(for triode ac switch) and the silicon bilateral switch (SBS)

my book is falling apart someday i'll scan it..maybe.  700+ pages



tim_s