Noel Maginnity is a consultant in Carterton, New Zealand. An alternative audio program input is often required at a medium-wave transmission site. During STL maintenance or if the STL fails, it is ...

DELTA has lifted the application range of variable filters to new levels by introducing a new powerful type of linear variable filter (LVF). Since DELTA offered the first linear variable filters in ...

Delta Optical Thin Film has lifted the application range of variable filters to new levels by introducing a new powerful type of linear variable filter (LVF) Since Delta Optical Thin Film A/S offered ...

A new instrument has been developed to implement highpass, lowpass and bandpass filters. The Model 601 tunable highpass/lowpass filter contains a tunable 8-pole Butterworth highpass filter followed by ...

a) Show that the RLC circuit in the figure above is also a bandpass filter by deriving an expression for the transfer function H(s). b) Compute the center frequency, ω o. d) Compute values for R and L ...

How do you implement a variable capacitor these days? Mechanical caps are out. That leaves varactors, which work fine but require higher voltages that often are not available, and their response is ...