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???
10/29/06 23:18
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#127117 - Voltage Step-Up
Dear members,
I build some device like an inverter, operated with XR2206 at 100khz, amplified using LF351.
It can make sinusoidal output with 18vp-p dc out, amplified again using 3 level of NPN Switching Mode Transistor.
And then I make a transformer with ferritte core, that result 220vac (440vp-p) at the secondary output.
But when I connect its secondary output to a light bulb of 220vac/15w, the voltage drop to 75vac.
Can anyone help me with the "correct formula" of coils for the step up transformer?
I use Switching PSU 24vdc 15A, and a stick ferrite core for the transformer.
I mean, what shape of the ferrite core, the thickness of the email wires, how many turns, etc.. so I can handle the 160W load for 220vac output.

Best regards,
Tinggo Santoso, ST
Perum. Wisma Mukti
Jl.Klampis Anom F32 III/22
031 6024 8951
081 231 53035
www.geocities.com/tnet232
tnet232@yahoo.com


List of 19 messages in thread
TopicAuthorDate
Voltage Step-Up            01/01/70 00:00      
   Well, ...            01/01/70 00:00      
      Well, ...            01/01/70 00:00      
      Replace Transfm. using H-bridge MOSFET            01/01/70 00:00      
   Transformer design            01/01/70 00:00      
   Stick ferrite core is totally unsuited!            01/01/70 00:00      
      Stick ferrite core is totally unsuited!            01/01/70 00:00      
         100kHz needed?            01/01/70 00:00      
            Pulsing @1khz            01/01/70 00:00      
               Hhm            01/01/70 00:00      
                  anyhow            01/01/70 00:00      
                     Yes, good guess...            01/01/70 00:00      
                     The Load            01/01/70 00:00      
                        Tell him            01/01/70 00:00      
                           C load?            01/01/70 00:00      
                  lamp            01/01/70 00:00      
   Voltage regulation.            01/01/70 00:00      
      Please don't use SMS-style abbreviations            01/01/70 00:00      
         Found a pair!            01/01/70 00:00      

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