Methods and systems for generating a guaranteed offer price for a vehicle are disclosed. A method for current andor temperature control of light fixtures includes providing the system, monitoring the current flow or the temperature of the light fixture ; and regulating the current flow of the light fixture. The circuit includes a driver circuit configured to change the power transistor to a completely on or off state with the aid of a control signal supplied to the control electrode. Each of the input and output portions is resonant tank circuit having a electrical resonant frequency substantially matching the mechanical resonance whereby the amplitude of the mechanical vibrations are increased. Image accepting members comprising a microporous film made by the above method, and preferably comprising a support which is also microporous. In use the AC coils are connected in series with a load and during alternate half cycles of the AC supply at least one of the AC coils produces a magnetic field that opposes a magnetic field of the DC magnetic circuit.