New PS-15 Kit: High-Voltage Power Supply with Two Low-Voltage Regulated Power Supplies

Item# PS-15 Kit
High-voltage power supply capacitors:  First low-voltage regulator output voltage:  Second low-voltage regulator output voltage:  Heatsink height: 
Availability: Usually ships in 5-7 business days

Product Description

The PS-15 is a new GlassWare power supply kit for tube fanciers. The PS-15 fills a gap: a power supply for those who need a high-voltage power supply with two sets of regulated low-voltage power supplies (usually for powering heaters).

The high-voltage portion of the PS-15 power supply uses a high-speed solid-state full-wave bridge rectifier circuit (or full-wave center-tap rectifier circuit) and a simple RC filter to achieve a fairly quiet high-voltage output, which can span up to 350V at the output, with 400V capacitors; or, up to 200V, with 250V capacitors; the choice is yours.

The two low-voltage regulators are meant to power the tube heaters, whose cathodes might be hundreds of volts apart, as each low-voltage regulator circuit is independent. Or, perhaps, you might give each channel its own heater power supply. Or, power something altogether different, such as an external DAC.

In addition, each low-voltage regulator’s power supply is flexible enough to allow either a conventional full-wave-bridge rectifier arrangement or a two rectifier voltage-doubler configuration, allowing for more latitude in power transformer selection; this regulator can be set to either 6.3V, 12V, 12.6V, 15V, 18V, or 24V. In addition, the PS-15 can DC reference both heater regulators to differing positive voltages or left floating, with only a small capacitor to ground. Moreover, the two low-voltage regulators can be configured as a low-voltage, bipolar power supply referenced to ground, for use with OpAmps.

On this six by four inch, extra thick (0.094), 2oz-copper traces, USA-made PCB resides both a high-voltage power supply and two low-voltage regulators—each finding its own raw power supply, including the rectifiers and power-supply reservoir capacitors. In other words, except for the power transformers, the PS-15 PCB holds all that is needed to make a fine high-voltage power supply suitable for complex tube circuits.

Kit includes all the parts needed to populate the PCB and includes an array of power resistors to establish the required high-voltage output voltage; also includes four hex standoffs with screws and O-rings; and comes with user guide.


Triad VPT230-110 toroidal transformer
The Triad VPT230-110 toroidal transformer holds two secondaries and two primaries.

VPT230-110 Electrical Specifications (@25C) 1. Maximum Power: 25VA 2. Input Voltage: Series: 230VAC, 50/60Hz Parallel: 115VAC, 50/60Hz 3. Output Voltage: Series: 230VAC CT@ 0.11A Parallel: 115.0VAC@ 0.22A 4. Voltage Regulation: 12% TYP from full load to no load 5. Temperature Rise: 30°C TYP 6. Hipot: 4000VAC, Primary to Secondary 7. Efficiency: 87% TYP. @ full load

The two secondaries allow two rectified B+ voltages to be created, either 165Vdc @ 100mA or 330Vdc @ 50mA. The two primaries allow this transformer's use with either 120Vac or 230-240Vac wall AC voltages.

This toroid is a great match with the PS-1 regulator, along with the TA050-12 12Vac toroid for the heater regulator portion of the PS-1. I should know, as I have used many of these toroids in the past. It could also be used with PS-3 or PS-15 or PS-18. It would also work well with the ACF-2 PCBs.

Because we charge a flat-rate of shipping, you will not be penalized for its high weight (1.102 lbs). This high-voltage toroid comes with the mounting hardware and large rubber washer
Availability: Usually ships in 5-7 business days
Triad VPT230-110 toroidal transformer VPT230