Explore Circuits - Signal




Circuit / Schematic diagram of	Description

Band Pass

29.850 Band Pass Filter
Single OpAmp Band Pass filter
Active Band Pass Filter	Time honored multiple feedback band pass (MFBP) type which uses capacitors of equal value and leads us to simplified calculations.
24dB Band Pass Filter	Filter circuit along with power supply unit
Band Pass IF Filter
Notch/Band Pass Filter
Multiple Feedback Band pass filter
Self Twining CW Filter

Low Pass

Low Pass Active Filter	OpAmp based low pass filter.
SSB AF Filter	This is a simple filter that restricts the LF response a little as well providing quite a heavy HF roll-off.
1 MHZ Low Pass filter	The filter circuit uses no inductor.
Low pass filter	Filter tuned by a single resistor.

High Pass

Second order high pass filter

Notch

Notch Filter
Adjustable Notch Filter	They can be used in your small pre-amp or amplifier project to filter out any HUM at 50 Hz or 60Hz .
Variable Notch Filter	Variable notch filter with both high and low pass filter
Helical Resonator Notch Filter
High Q Notch Filter
RC Notch Filter
Twin T Notch Filter	This allows us to remove the 50Hz hum picked up by, say, a microphone cord.
Transient Noise Eliminator
Galaxy Noise Filter Schematic

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