1. -- Testing out a random circuit from www
2. -- Testing loosely pre-calculated design (not fully conceptually correct)
[Eop]
2. -- Testing loosely pre-calculated design (not fully conceptually correct)
[Eop]
Showing posts with label 240VAC. Show all posts
Showing posts with label 240VAC. Show all posts
Sunday, December 30, 2018
Tuesday, November 10, 2015
alternate for gas discharge indicator
((fuck this blogger *editor is slow 2day . . . ))
so about :: i've made (now a total) 3 circuits that use active pre-load - all have failed due a different reasons
(i) using ~250V electrolytic capacitors in series with incandescent lamps -- the ´lytes exploded !!! (trivia) -- however it took them 1.5d (some 36h) to heat up -- later i just added more incandescents to fill the voltage gap
(ii) using ceramic capacitor before Russian Lim.?700V full-bridge . . . that actually has a std. leak - e.g. if [+][–] terminals are not connected the –[L]] –– [[~] Bridge [~]] –– [[]Load[]]––2 [[N] – connection provides enough AC for 25W incandescent as a Load to glow near it´s max brightness !!! --- everything worked correctly at nominal !!average!! values (measured by analog multimeter) but the LED and 1BJT failed after 1.5y (apx.13000h) ???
(iii) using 15nF as "200kΩ" pre-load to 60V neon lamp caused the neon´ to relatively fast dim down and collect eighter C or metal film to it´s inner surface causing more dimming (service apx.1500 + ? h) . . .
. . . so i replaced it with this ::
( it´d make sense to set at least 1 fuse close to [L] or (2-nd near [N]) terminal -- this circuit relies on 10A line protection -- i can't predict how warm the (250mW) 100 ohm limit´ll get in continuous op. and what results if it does heat up . . . ) Update/About -- (so far it does not give out any smoke) but one LED is brighter the other one -- is either the asymmetry of DB3 , a bad selection of capacitor values/ratios -- or a combination of both (some of it can be adjusted by discharge resistors , charge storage cap.-s) . . .
((the Blogger* didn´t crash so far !!! . . .))
[EoF]
so about :: i've made (now a total) 3 circuits that use active pre-load - all have failed due a different reasons
(i) using ~250V electrolytic capacitors in series with incandescent lamps -- the ´lytes exploded !!! (trivia) -- however it took them 1.5d (some 36h) to heat up -- later i just added more incandescents to fill the voltage gap
(ii) using ceramic capacitor before Russian Lim.?700V full-bridge . . . that actually has a std. leak - e.g. if [+][–] terminals are not connected the –[L]] –– [[~] Bridge [~]] –– [[]Load[]]––2 [[N] – connection provides enough AC for 25W incandescent as a Load to glow near it´s max brightness !!! --- everything worked correctly at nominal !!average!! values (measured by analog multimeter) but the LED and 1BJT failed after 1.5y (apx.13000h) ???
(iii) using 15nF as "200kΩ" pre-load to 60V neon lamp caused the neon´ to relatively fast dim down and collect eighter C or metal film to it´s inner surface causing more dimming (service apx.1500 + ? h) . . .
. . . so i replaced it with this ::
( it´d make sense to set at least 1 fuse close to [L] or (2-nd near [N]) terminal -- this circuit relies on 10A line protection -- i can't predict how warm the (250mW) 100 ohm limit´ll get in continuous op. and what results if it does heat up . . . ) Update/About -- (so far it does not give out any smoke) but one LED is brighter the other one -- is either the asymmetry of DB3 , a bad selection of capacitor values/ratios -- or a combination of both (some of it can be adjusted by discharge resistors , charge storage cap.-s) . . .
((the Blogger* didn´t crash so far !!! . . .))
[EoF]
Sunday, April 5, 2015
Rebuilt two transformers
There seems to be a dependency for 50Hz Sine transformers - such that the less ampere turns on secondary the less actual output power . . . no matter the copper diameter !
The TF.2 has 2-le - and the TF.1 has 3-ple in parallel secondary winding from 01..0.08mm wire - e.g. - a lot of amp.-turns.
so here what we got
and a figure
note :: for the TF.1 is shown L.1.Before some 29(H) and .After 45(H) -- there's another experiment listing the values for the original NiMH charger's TF as R.i = 1251(Ω) and L.i = 47.5(H) , R.ii.YR (yellow,red wire , center tapped , total) = 2.4(Ω) , 9.11(V) - & - R.ii.BB (blue,blue , total) = 54.3(Ω) , 28.8(V) - but there's no much other data - i guess the ~AC.peak! voltages were required at the time --- so the table has data for TF.1 from the more complete experiment . . .if we multiply the 29.3(H) with Pi/2 we get 46.1(H) -- so i guess there's a current measurement peculiarity involved -- as Z = U/I = U.AVG / I.AVG , I.AVG = I.MAX·(2/π) -- or -- the prev. more precise Z.correct = Z·(π/2) → L.i = 46.4(H) , L.ii.YR = [P.i=P.ii=U².x/Z.x] = 44.546(mH) -- !!! however it does not much affect the DC(direct current) test values that are compared here
The TF.2 has 2-le - and the TF.1 has 3-ple in parallel secondary winding from 01..0.08mm wire - e.g. - a lot of amp.-turns.
so here what we got
Transformer-Rating-A.xls
|
Transformer-Rating-B1.xls
|
||||||||
TF.2
|
5W2DRW
|
After
|
W2V33
|
Before
|
|||||
2x
|
Z.in
|
10283.84
|
(Ω)
|
Z
|
9833.044786
|
||||
32xEI+2E
|
XL.in
|
10260.87
|
(Ω)
|
XL
|
9809.347823
|
||||
17.5
|
dpth
|
L.in
|
32.66136
|
(H)
|
L(H)
|
31.22412389
|
|||
41
|
wdth
|
R.in
|
687
|
(Ω)
|
R1(Ω)
|
682.25
|
|||
33
|
hght
|
||||||||
6:8:13:8:6
|
Z.out
|
74.103
|
(Ω)
|
||||||
21
|
XL.out
|
70.26131
|
(Ω)
|
||||||
L.out
|
223.6487
|
(mH)
|
L(mH)
|
26.7864545
|
|||||
R.out
|
23.55
|
(Ω)
|
R2(Ω)
|
0.9
|
|||||
TFRT
|
11.78039
|
(1)
|
N(1)
|
34.086046
|
|||||
~AC
|
|||||||||
Norm.IN
|
240
|
(V)
|
240
|
||||||
Norm.OUT
|
20.37283
|
(V)
|
7.041004405
|
||||||
~DC
|
|||||||||
Norm.IN
|
240
|
(V)
|
|||||||
Norm.OUT
|
28.33159
|
(V)
|
|||||||
about*
|
Simulated
|
||||||||
*REAL
|
RL(Ω)
|
u. RL(V)
|
p. RL(W)
|
i.RL(mA)
|
|||||
SCir.Max
|
0
|
0
|
0
|
310.6169
|
3xVtg.Mpl
|
1.34W 25.7V 51.5mA @ 497sz
|
|||
RL.P.Max
|
74.103
|
14.17819
|
2.712727
|
191.3309
|
normal
|
1.27W 8.48V 150mA @ 56sz
|
|||
80%
|
170%
|
210%
|
130%
|
||||||
TF.1
|
NiMH-YR
|
After
|
YR
|
Before
|
|||||
3x
|
Z.in
|
14195.2
|
(Ω)
|
Z
|
9320.274036
|
||||
30xEI+2E
|
XL.in
|
14153.2
|
(Ω)
|
XL
|
9215.587833
|
||||
16
|
dpth
|
L.in
|
45.05103
|
(H)
|
L(H)
|
29.33412714
|
|||
35
|
wdth
|
R.in
|
1091.25
|
(Ω)
|
R1(Ω)
|
1393
|
|||
29.5
|
hght
|
||||||||
5:7.75:9.5:7.75:5
|
Z.out
|
482.172
|
(Ω)
|
||||||
19.5
|
XL.out
|
477.6543
|
(Ω)
|
||||||
L.out
|
1520.421
|
(mH)
|
L(mH)
|
27.65934601
|
|||||
R.out
|
65.85
|
(Ω)
|
R2(Ω)
|
2.55
|
|||||
TFRT
|
5.425875
|
(1)
|
N(1)
|
32.08109189
|
|||||
~AC
|
|||||||||
Norm.IN
|
240
|
(V)
|
240
|
||||||
Norm.OUT
|
44.23476
|
(V)
|
7.481042129
|
||||||
~DC
|
|||||||||
Norm.IN
|
240
|
(V)
|
|||||||
Norm.OUT
|
63.58902
|
(V)
|
|||||||
about*
|
Simulated
|
||||||||
*REAL
|
RL(Ω)
|
u. RL(V)
|
p. RL(W)
|
i.RL(mA)
|
|||||
SCir.Max
|
0
|
0
|
0
|
115.654
|
3xVtg.Mpl
|
2W 9.6V 208mA @ 46.5sz
|
|||
RL.P.Max
|
482.172
|
36.98703
|
2.837246
|
76.70921
|
normal
|
2.45W 2.88V 847mA @ 3.4sz
|
|||
0%
|
1280%
|
120%
|
10%
|
||||||
and a figure
note :: for the TF.1 is shown L.1.Before some 29(H) and .After 45(H) -- there's another experiment listing the values for the original NiMH charger's TF as R.i = 1251(Ω) and L.i = 47.5(H) , R.ii.YR (yellow,red wire , center tapped , total) = 2.4(Ω) , 9.11(V) - & - R.ii.BB (blue,blue , total) = 54.3(Ω) , 28.8(V) - but there's no much other data - i guess the ~AC.peak! voltages were required at the time --- so the table has data for TF.1 from the more complete experiment . . .if we multiply the 29.3(H) with Pi/2 we get 46.1(H) -- so i guess there's a current measurement peculiarity involved -- as Z = U/I = U.AVG / I.AVG , I.AVG = I.MAX·(2/π) -- or -- the prev. more precise Z.correct = Z·(π/2) → L.i = 46.4(H) , L.ii.YR = [P.i=P.ii=U².x/Z.x] = 44.546(mH) -- !!! however it does not much affect the DC(direct current) test values that are compared here