epilot
Member
hi friends,
today i had a wireless phone for repair and its handphone have a cordless
power circuit, it can be charged like a primary and secondary transformer
and since it use from high frequency system rather than that normal 50 or 60Hz transformers it must be smaller than that common transfers, but after taking the hand phone apart i saw that there is a very thin board with less than 15 number of coil and without any iron or Ferrite,
the freq maker(oscillator) for the primary has one transistor and a few other components,
it would be very ok if some could suggest any circuit for these nice smal transducers,
how know how many freq the oscillator produce in these devices?
do you think if i make a coil as secondary with different numbers then it can produce power without any other component?(the original secondary can produce more than 8V)
today i had a wireless phone for repair and its handphone have a cordless
power circuit, it can be charged like a primary and secondary transformer
and since it use from high frequency system rather than that normal 50 or 60Hz transformers it must be smaller than that common transfers, but after taking the hand phone apart i saw that there is a very thin board with less than 15 number of coil and without any iron or Ferrite,
the freq maker(oscillator) for the primary has one transistor and a few other components,
it would be very ok if some could suggest any circuit for these nice smal transducers,
how know how many freq the oscillator produce in these devices?
do you think if i make a coil as secondary with different numbers then it can produce power without any other component?(the original secondary can produce more than 8V)