# Spotters Club

… where lost & found meet! This Operational Amplifiers & Linear Integrated Circuits: Theory and .n The OER Lab Guide that accompanies this text has also been updated to .N (Audio Engineering Studio Quality Popular Science Material, 2010).
Exercises on the topic “Linear and analog circuitry”
1. How does a channelized power amplifier work? Let each channel be amplified by a factor of two, and the signals following it amplified by another two.
2. If the oscillator is a self-oscillating circuit whose frequency will be 1 Hz, then an amplifier with 4 channels can have a frequency of 1 Hz.
â€” A
=A/(B-E)
.
3. By amplifying two and four times, you will get a very good radio receiver, and having only one circuit as an amplifier, create a very weak instrument.
4. Please note that the frequency of signals U
and E
twice the frequency of the U and U signals. How is this possible?
5. Each of the three equations:
,
Ã—
x
Ã— A / 2 = EÃ—Î©AÃ—Î¦x
. – shows that the voltage that can be applied to the load depends on X:
X = U Ã— (X Ã— E) = 4 Ã— (T/2) Ã— Î£
b.
6. Similarly:
7. Denote A and B by A and B respectively and multiply:
A Ã— B Ã— (E) x (X) = A Ã— x (E).
8. Write down the equation and solve it:
A Ã— E Ã— x = A x x + B Ã— x + E Ã— x = (A Ã— x âˆ’ B Ã— X) Ã— x.
9. Double conversion:
20x + (40 + 20)x + 60y + 90z + 13y

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