6瓦锗管单端带输出变压器石机

没有人

听音口味重啊

zhainm

供电30V 低压下，电路其实挺稳定的，手摸没问题
到了50V左右，手摸就很容易挂，音量开关开大也烧保险
不是管子耐压不够，是过流
softpack 发表于 2009-12-4 16:04

不会是接近自激的临界状态吧？

softpack

不会是接近自激的临界状态吧？
zhainm 发表于 2009-12-7 08:03

我也怀疑自激，可惜没有示波器

DarkHorse

过压啦...不用怀疑...静态是能上50V...
但输出牛会感生反电动势...小小信号就会将SB449击穿崩溃...

softpack

过压啦...不用怀疑...静态是能上50V...
但输出牛会感生反电动势...小小信号就会将SB449击穿崩溃...

DarkHorse 发表于 2009-12-7 12:15

是B411啦

DarkHorse

是B411啦
softpack 发表于 2009-12-7 12:28

总而言之:锗管在这么大的电流下不适宜上高压...

softpack

66# DarkHorse


你的AD161/AD162功放进展怎么样了，发声了没？

DarkHorse

回SOFTPACK兄:
今年我还没打算做AD161/162的功放...
因为我的锗单端还搁浅着...做好锗单端...估计就不做AD161/162的OTL啦...
可能做用SB449带输入牛的OTL...输出10W...更有意思...
人懒没办法...其实我很简单,只想有台好听的单端来听音乐...哈哈
(很佩服SOFTPACK的DIY精神,顶得住折腾,严重支持你!)

softpack

春节放假有空试了试单管2SK214（电流250mA）和单管2SK1058（电流0.7A）带输出牛，声音都不错，有模有样的。。。

可惜个人不喜欢，没有锗管那种味道，总觉得差点什么......

FD422

我找到的资料2SB449是硅PNP管啊

softpack

70# FD422


2SB407 - 15/01/2009 at 06:21
Various
Ge PNP Power BJT
V(BR)CEO (V)=30
V(BR)CBO (V)=30
I(C) Abs.(A) Collector Current=7.0
Absolute Max. Power Diss. (W)=30
I(CBO) Max. (A)=500u
h(FE) Min. Static Current Gain=80
@I(C) (A) (Test Condition)=1.0
@V(CE) (V) (Test Condition)=1.5
f(T) Min. (Hz) Transition Freq=350k
Package=TO-3
Military=N


ASZ16 - 13/01/2009 at 17:12VariousGe PNP Power BJTV(BR)CEO (V)=32V(BR)CBO (V)=60I(C) Abs.(A) Collector Current=10Absolute Max. Power Diss. (W)=30I(CBO) Max. (A)=3.0mh(FE) Min. Static Current Gain=35h(FE) Max. Current gain.=80@I(C) (A) (Test Condition)=6.0@V(CE) (V) (Test Condition)=1.0f(T) Min. (Hz) Transition Freq=250kPackage=TO-3Military=N

AD149 - 24/01/2009 at 16:32VariousGe PNP Power BJTV(BR)CEO (V)=30V(BR)CBO (V)=50I(C) Abs.(A) Collector Current=3.5Absolute Max. Power Diss. (W)=22I(CBO) Max. (A)=350uh(FE) Min. Static Current Gain=30h(FE) Max. Current gain.=100@I(C) (A) (Test Condition)=1.0@V(CE) (V) (Test Condition)=1.0f(T) Min. (Hz) Transition Freq=300kPackage=TO-3Military=N
2SB449 - 07/01/2009 at 10:59
Various
Ge PNP Power BJT
V(BR)CEO (V)=50
V(BR)CBO (V)=50
I(C) Abs.(A) Collector Current=3.5
Absolute Max. Power Diss. (W)=22
I(CBO) Max. (A)=3.0m
h(FE) Min. Static Current Gain=20
h(FE) Max. Current gain.=85
@I(C) (A) (Test Condition)=3.0
@V(CE) (V) (Test Condition)=0
f(T) Min. (Hz) Transition Freq=10k
Package=TO-3
Military=N

2SB337 - 09/01/2009 at 18:16
Various
Ge PNP Power BJT
V(BR)CEO (V)=30
V(BR)CBO (V)=40
I(C) Abs.(A) Collector Current=7.0
Absolute Max. Power Diss. (W)=12
I(CBO) Max. (A)=1.0m
h(FE) Min. Static Current Gain=50
h(FE) Max. Current gain.=165
@I(C) (A) (Test Condition)=1.0
@V(CE) (V) (Test Condition)=2.0
f(T) Min. (Hz) Transition Freq=300k
Package=TO-3
Military=N

2SB411 - 16/01/2009 at 12:05
Sanyo Semiconductor
Ge PNP Power BJT
V(BR)CEO (V)=200
V(BR)CBO (V)=200
I(C) Abs.(A) Collector Current=11
Absolute Max. Power Diss. (W)=40
I(CBO) Max. (A)=250u
h(FE) Min. Static Current Gain=60
@I(C) (A) (Test Condition)=1.0
@V(CE) (V) (Test Condition)=1.5
f(T) Min. (Hz) Transition Freq=2.5M
Status=Discontinued
Package=TO-3
Military=N



AD161 - 01/01/2009 at 15:38
Various
Ge NPN Power BJT
V(BR)CEO (V)=20
V(BR)CBO (V)=32
I(C) Abs.(A) Collector Current=1.0
Absolute Max. Power Diss. (W)=4.0
I(CBO) Max. (A)=500u
h(FE) Min. Static Current Gain=80
h(FE) Max. Current gain.=320
@I(C) (A) (Test Condition)=500m
@V(CE) (V) (Test Condition)=1.0
f(T) Min. (Hz) Transition Freq=3.0M
Package=TO-66var
Military=N

AD162 - 25/01/2009 at 07:28
Various
Ge PNP Power BJT
V(BR)CEO (V)=20
V(BR)CBO (V)=32
I(C) Abs.(A) Collector Current=3.0
Absolute Max. Power Diss. (W)=6.0
I(CBO) Max. (A)=200u
h(FE) Min. Static Current Gain=74
h(FE) Max. Current gain.=300
@I(C) (A) (Test Condition)=50m
@V(CE) (V) (Test Condition)=1.0
f(T) Min. (Hz) Transition Freq=1.5M
Package=TO-66var
Military=N

softpack

http://www.datasheet.org.uk/search.php?q=2SB449

TPLINK

楼主还是说说具体在哪些方面1969比不上

FD422

看来奇怪了。

2SB449 - Silicon PNP Power Transistors - Savantic, Inc.

http://www.alldatasheet.com/data ... AVANTIC/2SB449.html

FD422

http://pdf1.alldatasheet.com/dat ... pwDp+/datasheet.pdf

FD422

http://www.datasheet.org.uk/pdf/Datasheet-041/DSA00108840.pdf
楼主给的网站也说它是硅管啊

SavantIC Semiconductor Product Specification Silicon PNP Power Transistors 2SB449 DESCRIPTION ·With TO-3 package ·Low collector saturation voltage ·Wide area of safe operation APPLICATIONS ..

硝化甘油

羡慕

softpack

76# FD422


打开网址看右下边的说明资料，不是左边的PDF

zhke

76# FD422


打开网址看右下边的说明资料，不是左边的PDF
softpack 发表于 2010-2-28 15:15

有没输出牛的绕制数据．．．

softpack

79# zhke


没有，找DARKHORSE要吧