ATTENTION !!! Reuse information at your own risk:
(1) The auther expressly disclaim all liability for injury or property
damages.
resulting from described information.
(2) All information will be revised for improvement without previous
notum.
Part 1; A summary/report of STC amp.
A study for the implementaion of STC amplifier
::: Detailed explanation of designing/building/adjusting of STC amp.
in English.
::: Page name amp_ut3e.htm is changed
to amput3e.htm (2001/4 Rev 3.11)
::: Protection from 1st stages damage. (2010/06)
Part 2; Implementation Test of STC and etc. circuit's amps.
("E:" marked is in English version, "*" marked is semi-conductor
final.)
****** General items ******
Cross ref. table for name of tubes~amps (On every update)
External power supplies (2) (2010/10)
Output impedance /DF of several amps.(2007/10)
****** Current amps ******
REV "Tube checker" univ. STC (2014/08)
| 6S4-A No NFB (2014/06)
| "Super univ." p-k NFB (Revival) (2014/06)
| EL34 PP monaural x2 (2012/10)
| 6080WC parallel OTL (2012/07)
| EL509 p-k NFB (revival) (2012/07)
| EL34 (T) PP (2008/08)
| 300B semi-STC (2007/02)
****** Record of former amps ******
*** STC amps (No-comment = STC V1 single, G2/G1G2 driven = semi-STC).
6BQ5 STC
| *2SK3689-01 d-k NFB
| "Super univ." semi-STC
| KT88/6550/etc. STC
| 6Y6G_GT STC
| "Tube checker" univ. STC #2
| "Horizontal sweeper" univ. STC
| 2A3/45 semi-STC
| 2E24 STC
| 6Y6GT STC-PP
| E: 6BM8 STC
| 6BQ5 STC-PP
| 12B4A
| 1619
| 6146
| 6197/6CL6/6AG7/12BY7A
| 6360
| 6384
| 807/1625
| 6CW5→6BK5
| 6DS5/6AQ5/6AR5
| 6EW7
| 6JS6C/EL509 STC
| 6V6G/GT--6V6GT para
| EL34/6L6GC--EL34 para
| Triode-pentode STC (6LR8, ECL86/6GW8, 6R-HP3/6AW8A/6HZ8)
| Low B voltage group STC (30A5, 30A5 para, 6AN5, 6AS5)
*2SC4029/2SC5200 semi-STC SEPP/OTL
| 6AC5GT semi-STC
| 25CD6-GB semi-STC PP
| *2SC5200 semi-STC
| *2SC3486 semi-STC
| 6550 semi-STC PP
| 6360 semi-STC PP
| 6Y6GT semi-STC PP
| Universal "Unified" G1G2 driven
| Universal "Separated" G1G2 driven
| 6BM8 G1G2 driven single/PP
| 6BQ5 G1G2 driven
| Universal G2 driven
| 6BM8 G2 driven single/PP
| 1626 semi-STC
| 6JS6C/EL509 semi-STC
*** Miscellaneous amps etc. (No-comment = single).
*2SD864k PP floating OPT | Triode driven CV18 gg
| 7044 p-k NFB
| 41/42/CZ-504-D p-k NFB
| *2SK3689-01 D-G NFB single
| *2SD864K SEPP-simple/OTL
| *2SD864K single/push-pull amps
| Common-used external power supplies
| Power IC driven CV18 A2-para S, 6N7GT/UZ79 B-PP
| Ebb=30V PP amps
| Driver tube driven 6N7/6N7GT/79 B-PP
| No-NFB small powered (QRP) single and PP
| Synthetic triode amp by Mr. Nonomura
| CV18 STC-driven para GG
| 1626, 2A3, 6EM7, CV18 P-G NFB jointed SRPP driven
| Horizontal sweeper P-G NFB selectable
| 6JS6C/EL509 DNFB
| 6Y6G/GT SEPP
| 6AN5 para SEPP
Part 3; Communications-receiver and Radio-set etc.
Convertor operation by Tri/Tet/Pen :: Freq conversion test with
general receiving tubes.(2011/06)
Maintenance of comm. RXs :: Home made communication
type short-wave RX's, the beginning.
Remodeling/capacity up of comm. RXs :: 1V2
mod to super-het etc. (2007/05)
---subset Building of X-tal convertor :: (2007/05)
---subset Building of Q5'er :: (2007/05)
Reproduction of BC RXs ::Std BC band 0V2/ 1V2/
Super-het. (2003/10)
0-V-2 :: Explanation, design, construction
of 0V2 RX (2004/06)
16A8ref :: Design, construction of 16A8 single
tube reflex 1V1 RX
5 tubes super-het :: Explanation, design, construction
of super-het RX
---subset Home brew 455kHz IFT (2004/12)
Repairment of ST Rx :: Restoration record
of old 5tubed ST super-het
Repairment of GT Rx :: Restoration record
of old 5tubed GT super-het
Japan original tubes :: An idea for the classification
of Japan original tubes
Part 4; Miscellaneous.
Revision history :: On every update
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