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Active
Filters: High Pass Active Filter
-- Main Page Last Updated on:
Sunday, November 01, 2009 04:14 AM
Circuits Designed
by Dave Johnson, P.E. :
HIGH PASS ACTIVE FILTER
COLLECTION
This is a collection of inverting and non-inverting active high pass filter
circuits.I included one, two three,
four and six pole filter circuits.You
can change the component value ratios shown to achieve any frequency cut-off you may
need. The circuit does not specify an operational amplifier.The circuits should be used to select the needed resistor and capacitor
components for a particular frequency knee andslope.
Links to electronic circuits,
electronic schematics, designs for engineers, hobbyists, students & inventors:
Butterworth Filter has Adjustable Group Delay - 08/08/02 EDN-Design Ideas: The
Sallen-Key realization of a 5.25-MHz, three-pole Butterworth filter has a gain of 2V/V
and can drive 75Ω back-terminated coax with an overall gain of 1 (Figure 1). Used to
reconstruct component-video (Y, Pb, Pr)and RGB signals, this filter has an insertion
loss greater than 20 db at 13.5 MHz and greater than 40 db at 27 MHz (Figure
2).....(design idea added 01/05)
High Pass Active Filter Collection - This is a collection of inverting and
non-inverting active high pass filter circuits. I included one, two three, four and
six pole filter circuits. You can change the component value ratios shown to achive
any frequency cut-off you may need. The circuit does not specify an operational
amplifier. The circuits should be used to select the needed resistor and capacitor
components for a particular frequency knee and slope. ….(designed by David A.
Johnson)
Highpass Filters Use Modified Equalelement Design - 05/24/01 EDN-Design Ideas:
Using a modified equal-element design for a lumped-circuit lowpass filter has several
advantages over the well-known equal-element design (Reference 1 and Reference 2). The
modified design exhibits superior passband performance with only modest degradation of
stopband selectivity. Moreover, the.....(design idea added 05/03)
Wideband filter uses image parameters - 10/26/00 EDN-Design Ideas: You can design
various lowpass and highpass filters using image parameters ( Reference 1 and
Reference 2 ). By cascading a highpass and a lowpass filter....(design idea added
08/08/08)
