Re: output transformer DC resistance mystery

"Mike Rivers" <mrivers@xxxxxxxxxxx> wrote in message
news:7b045f69-0fa8-40a5-a374-dbe7190249bf@xxxxxxxxxxxxxxxxxxxxxxxxxxxx
On Mar 20, 1:48 pm, Eeyore
<rabbitsfriendsandrelati...@xxxxxxxxxxx> wrote:

But you don't need it to to be *purely* resistive, just
mostly resistive, or rather less inductive.

So which is more reflectively inductive - an inductor
that's open- circuited, or an inductor that can actually
work as an inductor because it's in a circuit with a
resistor?

What do you mean by reflectively inductive?

If you load an inductor with nothing and apply current until steady-state
current flow is achieved then:

- if you load it with nothing, when you open the circuit, the voltage
across it will increase until there is some insulation break down and then
the energy stored in the inductor will be dissipated very rapidly.

- if you load it with a high resistance, when you open the circuit the
voltage across it will increase until the energy stored in the inductor is
dissipated rapidly.

- if you load it with a low resistance, when you open the circuit the
voltage across it will increase until the energy stored in the inductor is
dissipated more slowly.


.

Relevant Pages

  • Re: 5V switching IC
    ... This circuit costs the least of any design that I know of, ... on load, and this has strange effects on the oscillator. ... the inductor, causing the output voltage to increase. ... the output voltage eventually falls. ...
    (sci.electronics.design)
  • Re: 5V switching IC
    ... >>>the inductor, causing the output voltage to increase. ... >>>its magnetic field collapses, but eventually stops, allowing the load ... the output voltage eventually falls. ... >> end of the circuit. ...
    (sci.electronics.design)
  • Re: 5V switching IC
    ... >> on load, and this has strange effects on the oscillator. ... > the inductor, causing the output voltage to increase. ... the output voltage eventually falls. ... > Sadly, for certain loads, I've found that the circuit will simply fail ...
    (sci.electronics.design)
  • Re: 5V switching IC
    ... >>>This circuit costs the least of any design that I know of, ... > on load, and this has strange effects on the oscillator. ... the inductor, causing the output voltage to increase. ... the output voltage eventually falls. ...
    (sci.electronics.design)
  • Re: Designing an antenna for the 5000m band
    ... with four components (none of them an inductor) to make an inductor ... and the tank circuit. ... electrolytic capacitors which usually suffer with time if they are not ... Frank McKenney, McKenney Associates ...
    (rec.radio.amateur.antenna)
Loading