Flashcards
Filter Applications (Mod.6 Sect.3 Part 5)
Cards in this deck (25)
- 1A ____-____ filter is made with high-value components designed to overwhelm the undesired frequencies.brute-force
- 2In a _______ filter, neither line is grounded or connected to common.balanced
- 3In an _________ filter, the lines are directly groundedunbalanced
- 4Some filters are named for their basic shapes in schematics, such as: ____, __, __, and __ filters.pi, T, L, H
- 5Some filters are named for the basic shapes of their characteristic curves, such as: ___-pass, ____-pass, ____-reject, _____-pass, and _____ filters.low, high, band, band, comb
- 6A ____ wave is the only waveform with no harmonic frequencies.sine
- 7______ filters are used to eliminate harmonic frequencies.Comb
- 8One of the most important uses of filter circuits is in low-voltage and high-voltage _______ supplies.power
- 9What a power supply really does is ______ the power from an AC power line to DC power that can be used to operate electronic devices.convert
- 10The _______-__ filter is named that because it's designed by first finding the value of a constant (called K). Once K is found, the values of L and C in the filter can be calculated.constant-K
- 11A power supply filter that uses a tuned LC circuit that's either in series with or across the signal line is called an ___-_______ filter.M-derived
- 12A _______ can be used as a band-pass filter.transformer
- 13A transformer used as a band-pass filter is also called an ____ filter.r-f
(or radiofrequency) - 14_______ filters are often used in high-frequency r-f systems. Their purpose is to reject low-frequency noise signals that would disturb the functioning of the sytem.Crystal
- 15___________ crystals are widely used as frequency control mechanisms in oscillators, transmitters, and in clocks for microcompressors.Piezoelectric
- 16Crystals are often indicated by the term ______ in schematics.XTAL
- 17Piezoelectric crystals are often made of ______.quartz
- 18____________ crystals have very high Q when used as filters and are often used when very sharp r-f tuning is desired.Piezoelectric
- 19When pressure is applied across the faces of a quartz crystal, voltage is produced across the crystal. This is called the _________ effect.piezoelectric
- 20When voltage across a crystal causes it to change shape, it's called ____________.electrostriction
- 21A slight change in temp. can change a crystal's shape. This change affects its natural vibration frequency. To prevent this, the crystal is located in a small, temp. controlled oven called a ___________.crystal oven
- 22__________ filters consist of shaped metal rods that act as mech. resonators when used with piezoelectric transducers. A resonant frequency causes the filter to vibrate at a fixed rate. Only the res. freq. is able to set up vibrations and pass thru the filter.Mechanical
- 23A low-pass T-filter is an example of a ____-____ filter.choke-input
- 24A _____-pass filter is also sometimes called a radio-frequency filter.band
- 25When you compare a power-supply constant-K filter with a power-supply brute force filter, the constant-K filter is a ____-type filter.pi
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- Career Diploma Electronics Technician (Module 6 - Basic Electronics (Section 3)) Flashcards on Filter Applications (Mod.6 Sect.3 Part 5), created by That Yeti Dog Person on 28/06/2022.
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