akbarza
Full Member level 2
hi
the attached pic is from https://www.electronics-tutorials.ws/oscillator/hartley.html
how is the oscillator frequency calculated?
in the above address is said that " the gain of the circuit must be equal too or slightly greater than the ratio of L1/L2. If the two inductive coils are wound onto a common core and mutual inductance M exists then the ratio becomes (L1+M)/(L2+M)."
please explain how is obtained that the gain must be larger the ratio L1/L2 ?also explain about (L1+M)/(L2+M).
thanks
the attached pic is from https://www.electronics-tutorials.ws/oscillator/hartley.html
how is the oscillator frequency calculated?
in the above address is said that " the gain of the circuit must be equal too or slightly greater than the ratio of L1/L2. If the two inductive coils are wound onto a common core and mutual inductance M exists then the ratio becomes (L1+M)/(L2+M)."
please explain how is obtained that the gain must be larger the ratio L1/L2 ?also explain about (L1+M)/(L2+M).
thanks