While learning about transistors, I've found this circuit. After trying to understand how it works, I've no idea.
Basically, the circuit works using the collapsing magnetic field of a bifilar toroid.
As I understand, transistor works permitting to flow the electricity from collector to emitter, while applying a positive voltage to the base.
Basically I'm used to see an oscillator (like a 555), sending the on/off signal to the base of the collector.
In this circuit I cannot understand how the on/off signal is created. Maybe combining the resistor and capacitor to create a RC charge/discharge?
All information is welcome, because I don't understand anything.
**broken link removed**
**broken link removed**
Basically, the circuit works using the collapsing magnetic field of a bifilar toroid.
As I understand, transistor works permitting to flow the electricity from collector to emitter, while applying a positive voltage to the base.
Basically I'm used to see an oscillator (like a 555), sending the on/off signal to the base of the collector.
In this circuit I cannot understand how the on/off signal is created. Maybe combining the resistor and capacitor to create a RC charge/discharge?
All information is welcome, because I don't understand anything.
**broken link removed**
**broken link removed**