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Posts tagged 12AX7

tube Amplifier circuit for Guitar

tube Amplifier circuit for Guitar using 12AX7, 6BM8, 5Y3GT

Audio circuit

Audio circuit using 12AX7, 2x6BQ5, EL84 Audio circuit using 12AX7, 2x6BQ5, EL84

Make 2.45GHz RF Signal Detector

Make 2.45GHz RF Signal Detector This passive RF indicator is made from a few simple parts.  A 100uA moving coil meter is used to display the relative intensity of the RF signal.  This circuit can be used with some cellphones and many cordless telephones.

Adjust the Layout of Components on PCB

Adjust the Layout of Components on PCB The layout of a PCB can be very important so I always lay the components out as they are in the circuit diagram to begin with. Instead of circuit symbols I draw the component pins. The drawing is made with a pencil on 1/4″ squared paper. The compnents […]

Audio Frequency Sensor Schematic

Audio Frequency Sensor Schematic using Transistor and IC  2N5086, LM3389 Audio Frequency Sensor Schematic Sensor noise for the safety of ultrasonic sensors for detecting the presence of noise in the capture tool for air propagation.

How to create a tone control audio clean, gently, but firmly? BC109C

How to create a tone control audio clean, gently, but firmly? afiata.com always wore these transistors. The first transistor (left side) acted as a buffer. Provides circuit with high input impedance, around 250k has a voltage gain of slightly less than unity. As Baxendall tone control circuit is a passive design, all audio frequencies are […]

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