Miguel Lopez
- Jan 25, 2012
- 255
- Joined
- Jan 25, 2012
- Messages
- 255
Hello everybody.
I'm trying to make the circuit shown bellow using the components of a CFL (HV transistors, ferrite core, HV diodes, HV capacitors, etc) in order to obtain a 5V source to supply a TTL-made timer which demands up to 500mA
I need some help with the cicuit configuration (for the self oscilating circuit) and how many turns (approx.) should I coil in the ferrite core. And how would be the marks in the transformer winding.
I want to rectify the 110 V AC line supply and using one of the capacitor of the CFL, obtain 150 V CD (non-regulated), and then the self-oscilating circuit with one independent (and isolated) secondary to obtain 5V using a single diode and a small capacitor. I've read that 40 kHz oscilation would be suitable for this purpose.
Thanks in advance.
An explanation on how this circuit works could be found here:
http://www.gzhambo.com/NewsView.asp?ID=109&SortID=22
Thanks in advance.
Miguel
PS: If there is a thread about this I apologise. Please redirect me to that thread.
I'm trying to make the circuit shown bellow using the components of a CFL (HV transistors, ferrite core, HV diodes, HV capacitors, etc) in order to obtain a 5V source to supply a TTL-made timer which demands up to 500mA
I need some help with the cicuit configuration (for the self oscilating circuit) and how many turns (approx.) should I coil in the ferrite core. And how would be the marks in the transformer winding.
I want to rectify the 110 V AC line supply and using one of the capacitor of the CFL, obtain 150 V CD (non-regulated), and then the self-oscilating circuit with one independent (and isolated) secondary to obtain 5V using a single diode and a small capacitor. I've read that 40 kHz oscilation would be suitable for this purpose.
Thanks in advance.
An explanation on how this circuit works could be found here:
http://www.gzhambo.com/NewsView.asp?ID=109&SortID=22
Thanks in advance.
Miguel
PS: If there is a thread about this I apologise. Please redirect me to that thread.