Adding frequencies together from coils
Adding frequencies together from coils
(OP)
Adding frequencies together from coils:
If I have two coils( these are on an alternator) and they are both producing the same voltage at the same frequency (say 10Hz) with no phase difference between then, When these two coils are connected in series will the frequency now be 20Hz or still 10Hz.
i.e. when a number of coils are producing a frequency (all the same phase) and they are connected in series, what happens to the frequency?
Thank you
If I have two coils( these are on an alternator) and they are both producing the same voltage at the same frequency (say 10Hz) with no phase difference between then, When these two coils are connected in series will the frequency now be 20Hz or still 10Hz.
i.e. when a number of coils are producing a frequency (all the same phase) and they are connected in series, what happens to the frequency?
Thank you





RE: Adding frequencies together from coils
RE: Adding frequencies together from coils
Yes, 10Hz, the voltage will be the sum of the 2 coils, current limited to that of 1 coil output.
If wired in parallel, again 10Hz, voltage limited to that of 1 coil output, current capacity doubled.
Basically equivalent to a center tapped transformer.
RE: Adding frequencies together from coils
RE: Adding frequencies together from coils
As a simple question of just adding phase shifted voltages together, all previous respondents are correct.
RE: Adding frequencies together from coils
RE: Adding frequencies together from coils
The only way to get a higher-frequency response than you had from your original input signal frequency is to throw in some non-linear devices (like diodes as mentioned by logbook). Any frequencies you get that way will always be harmonics - integer multiples of the input fundemental frequency (20, 30, 40, 50, 60. . . Hz in your example with a 10Hz fundemental).
If you have all linear devices (resistors, caps, inductors), output frequency will always equal input frequency, the only possible changes are magnitude and phase shift.
No way to get lower frequencies out (5Hz, for example), using analog circuits -- not so far as I know, anyway -- you'd need some kind of logic device to do that.