Vacuum Tube Circuits
#vacuum tube
#amplifier
#analog
#high voltage
#vintage
#tube amp
#audio signal
#electronics
#DIY
#retro
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High Voltage Power Supply scheme
The schematic diagram is derived from the circuit of a High Voltage Power Supply utilizing the PWM IC TL494. This power supply requires a suitable alternating voltage source of 12 V / 800 mA. An alternating voltage is rectified using...
Linear ac analog coupler
The coupler is biased in the linear region using a 10 mA DC bias on the infrared emitting diode (IRED) and a voltage divider connected to the base of the phototransistor. This configuration allows the photodiode current to flow from...
turret diy
For maximum mini-security, this RC Tupperware Turret delivers a formidable deterrent against food theft. While it lacks motion sensors, potential food thieves will think twice before attempting to swipe baked goods. This 11-hour project, designed by Chris of PyroElectro, emphasizes...
Tesla Coils
The history of Nikola Tesla and Tesla Coils, how a Tesla Coil works, and an example of a homemade Tesla Coil. The homemade DIY Tesla Coil is battery-operated and has a gas plasma discharge terminal. Arcs can be made to...
Tesla Coils
The history of Nikola Tesla and Tesla Coils, how a Tesla Coil works, and an example of a homemade Tesla Coil. The homemade DIY Tesla Coil is battery-operated and has a gas plasma discharge terminal. Arcs can be made to...
Altec 1566 vacuum tube mic preamp and direct box
V1 and V2 are 12AX7 dual triodes. Each half of V1 is configured as a Class A voltage amplifier in a Common Cathode arrangement. In contrast, both halves of V2 are connected in a Cathode Follower configuration to provide current...
High-voltage-bucking-regulator
This circuit is essentially a classic buck regulator that utilizes a TMOS N-channel power FET for the chopper and generates its own supply for gate control. The unique feature of this circuit is its method for creating a separate supply...
Audio
This lab will demonstrate the theory and operation of non-inverting amplifiers as well as their practical application to amplify the signal of a microphone. A non-inverting amplifier will be constructed to increase the output signal of a microphone, which will...
Precision polarity switching circuit by conventional elements
The loop gain of the operational amplifier (OP) is primarily influenced by the ratio of the input resistor to the feedback resistor. Consequently, any resistance error can lead to a corresponding gain error, which necessitates the use of high-precision resistors,...