Amplifiers

1. Amplifier-shaper for the frequency counter.

Amplifier-shaper for the frequency counter circuit


2. Amplifier-shaper for the frequency counter.

Amplifier-shaper for the frequency counter circuit


3. Preamplifier for the frequency counter.

Amplifier-shaper for the frequency counter circuit


4. Amplifier-shaper for the frequency counter.

Amplifier-shaper for the frequency counter circuit


5. Amplifier-shaper for the frequency counter.

Gates based amplifier


6. RF amplifier.

HF amplifier


7. Amplifier.

Amplifier


8. High-Input impedance mplifier with bipolar transistors.

High impedance amplifier based on bipolar transistors


9. Amplifier.

Amplifier circuit


10. IF amplifier.

Amplifier for IF (Intermediate frequency) circuit


11. RF amplifier.

RF Amplifier circuit


12. Amplifier based on logic gates (CD4000).

Gates based amplifier


13. Logarithmic / antilogarithmic amplifier.

Logarithm / Antilogarithm amplifier circuit


14. Gain adjastment.

Volume adjustment


15. Radar detector.

Radar detector


16. Resonant amplifier based on piezo filter.

Resonant amplifier based on piezo filter


17. Amplifier with Q multiplier.

Amplifier with Q multiplier


18. Simple sound amplifier circuit.

Simple sound amplifier circuit


19. Microphone amplifier with differential input.

Microphone amplifier with differential input


20. Universal Gray's amplifier.

Universal Gray's amplifier


21. Q multiplier circuit.

Q multiplier circuit


22. Amplifier with bandwidth adjustment.

Amplifier with bandwidth adjustment
23. Amplifier for PC sound card with galvanic isolation.

Amplifier for PC sound card with galvanic isolation


24. AC amplifier with diode-capacitance coupling for low frequency.
(Not polarity capacitors sensitive - it can use polar capacitors in AC.)
AC amplifier with diode-capacitance coupling for low frequency
25. Compensation for distortion in amplifier with diode.

Compensation for distortion with diode

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