power supply (300V, 50mA + 6.3V, 3A max)
Description: This regulated power supply was built as a simplified outboard version of a PSU in my first phono stage. Replacing hexfreds with tube rectifier eliminates the need for power-on sequencing. Chassis (salvaged from a hospital laser PSU) size is 180W*240D*100H mm with a 125W double-C core power transformer and a 10H/100mA choke inside. More: Heater and plate regulators are on the same PCB (there's only one heater regulation channel). No exotic components of any kind - a low-cost but ultra-quiet unit. There is additional 120uF of paper capacitors in the phono audio chassis (red bricks on the board).
The described regulated power supply is designed for audio applications, particularly for use with phono stages, where low noise and stable voltage are critical for sound quality. The power supply employs a tube rectifier, which is known for its smooth voltage output and minimal ripple, contributing to the overall audio fidelity. The elimination of power-on sequencing simplifies the design and enhances reliability.
The chassis dimensions of 180 mm in width, 240 mm in depth, and 100 mm in height provide a compact form factor, making it suitable for integration into various audio setups. The salvaged chassis from a hospital laser PSU indicates a focus on quality materials and construction, which can enhance the durability and performance of the power supply.
A 125W double-C core power transformer is utilized to step down the mains voltage to the required levels for audio applications. The transformer’s design allows for efficient energy transfer with reduced electromagnetic interference. The inclusion of a 10H/100mA choke further smooths out the DC output, reducing ripple and noise, which is particularly beneficial in high-fidelity audio systems.
The power supply features a single PCB that houses both the heater and plate regulators. This configuration allows for efficient thermal management and reduces the complexity of the circuit. The use of low-cost components ensures that the design remains accessible while maintaining ultra-quiet operation, which is essential for high-quality audio reproduction.
The additional 120uF of paper capacitors in the phono audio chassis serves to filter and stabilize the power supply further, ensuring that the audio signal remains clean and free from unwanted artifacts. The choice of paper capacitors is often preferred in audio applications due to their favorable characteristics in audio frequency response and low distortion.
Overall, this regulated power supply is a straightforward yet effective solution for providing stable and low-noise power to phono stages, emphasizing practicality and performance without the need for expensive components.This regulated power supply was built as a simplified outboard version of a PSU in my first phono stage. Replacing hexfreds with tube rectifier eliminates the need for power-on sequencing. Chassis (salvaged from a hospital laser PSU) size is 180W*240D*100H mm with a 125W double-C core power transformer and a 10H/100mA choke inside.
Heater and plate regulators are on a same PCB (there`s only one heater regulation channel). No exotic components of any kind - a low-cost but ultra-quiet unit. There is additional 120uF of paper capacitors in the phono audio chassis (red bricks on th
The described regulated power supply is designed for audio applications, particularly for use with phono stages, where low noise and stable voltage are critical for sound quality. The power supply employs a tube rectifier, which is known for its smooth voltage output and minimal ripple, contributing to the overall audio fidelity. The elimination of power-on sequencing simplifies the design and enhances reliability.
The chassis dimensions of 180 mm in width, 240 mm in depth, and 100 mm in height provide a compact form factor, making it suitable for integration into various audio setups. The salvaged chassis from a hospital laser PSU indicates a focus on quality materials and construction, which can enhance the durability and performance of the power supply.
A 125W double-C core power transformer is utilized to step down the mains voltage to the required levels for audio applications. The transformer’s design allows for efficient energy transfer with reduced electromagnetic interference. The inclusion of a 10H/100mA choke further smooths out the DC output, reducing ripple and noise, which is particularly beneficial in high-fidelity audio systems.
The power supply features a single PCB that houses both the heater and plate regulators. This configuration allows for efficient thermal management and reduces the complexity of the circuit. The use of low-cost components ensures that the design remains accessible while maintaining ultra-quiet operation, which is essential for high-quality audio reproduction.
The additional 120uF of paper capacitors in the phono audio chassis serves to filter and stabilize the power supply further, ensuring that the audio signal remains clean and free from unwanted artifacts. The choice of paper capacitors is often preferred in audio applications due to their favorable characteristics in audio frequency response and low distortion.
Overall, this regulated power supply is a straightforward yet effective solution for providing stable and low-noise power to phono stages, emphasizing practicality and performance without the need for expensive components.This regulated power supply was built as a simplified outboard version of a PSU in my first phono stage. Replacing hexfreds with tube rectifier eliminates the need for power-on sequencing. Chassis (salvaged from a hospital laser PSU) size is 180W*240D*100H mm with a 125W double-C core power transformer and a 10H/100mA choke inside.
Heater and plate regulators are on a same PCB (there`s only one heater regulation channel). No exotic components of any kind - a low-cost but ultra-quiet unit. There is additional 120uF of paper capacitors in the phono audio chassis (red bricks on th
transformer circuit
A static device that couples two circuits to transfer alternating current (AC) from one circuit to another through electromagnetic induction. The current maintains the same frequency but may vary in voltage, phase, or impedance values. A transformer consists of two...
High Voltage Substations Overview
A distribution substation is defined by the apparent power of the transformer and its configuration, which can be aerial, terrestrial, or underground.
A distribution substation plays a critical role in the electrical power distribution network. It serves as a point where...
Circuit Project: 12KV High Voltage Generator
The hobby circuit described utilizes a unique approach to generate approximately 12,000 volts with a current of about 5 µA. It employs two silicon-controlled rectifiers (SCRs) that form dual pulse generator circuits. These SCRs discharge a 0.047 µF capacitor rated...
Gray Tube Replication 6
Has anyone tried colliding two high voltage potentials in a grey tube? Wiring two identical...
The concept of colliding two high voltage potentials within a grey tube involves creating a controlled environment where electrical discharge can occur. This setup typically requires...
kermit
The neighbor's drill charger ceased functioning, and it was discovered that the primary wires in the transformer were defective. The charger featured a straightforward design, comprising a transformer, a diode bridge, and a larger resistor. It was rated to deliver...
Electronic Pest Killing Lamp
Working Principle: The circuit, as illustrated in figure 4-187, is composed of three main components: the power circuit, the pulse oscillator, and the high voltage generator. The power circuit includes components S, FU, TI, VD1-VD4, C1, C3, IC1, R1, and...
Electrical transformer tutorial
Afroman explains the fundamentals of transformer operation, where to purchase step-down mains transformers, and how to safely wire one to mains voltages. The discussion includes both European and North American wiring standards. The presentation concludes with a brief example of...
low ripple regulated power supply
The value of capacitor C2 can be selected to achieve the desired level of smoothness, as its capacitance is effectively amplified by the combined gains of transistors Q1 and Q2. For instance, if a capacitance of 100 µF is selected...
Hv440: High Voltage Ring Generator
The HV739 is a monolithic single-channel, high-speed, high-voltage ultrasound transmitter pulser. This integrated, high-performance circuit is housed in a single 5x5 mm, 32-lead QFN package. The HV739 can deliver up to ±3.0 A of source and sink current to a...