Reference DAC PSU
for Red Baron / Tube-I-zator











Custom made "Galaxy" housing with 10mm front panel from modushop.biz

Custom made Transformer with double C-cores, made for Vacuumschmelze Germany for Siemens military equipment

Tube-Rectifier circuit (6106/GZ34 or equivalent) with High-End Parts for B+ of the Tube-I-zator

The C-L-C-R-C Network with no electrolytic caps!

Yamamoto Teflon socket

The new Tube-I-zator V3.1



The evolution brings the following changes:

- Anode PSU with Salas SSHV Shunt Reg. onboard
- External B+ Input for usage with other Anode PSU
- Heater PSU with C-R-C filtering
- Heater PSU with Softstart circuit
- Heater PSU Power LED

- Design failures corrected

Thanks to John (-ecdesigns-) for the following suggestions!

- Grid stoppers to prevent unwanted oscillations
- Bias current injection for TDA1541A usage
- Pull-down resistors to keep the coupling cap output at GND-potential

Still on the Module:

- Heater switch for 6N2P or 12AX7 usage


An example for a balanced use (e.g. Bufalo II), you could see HERE.



The PCB has the following data:

Material: FR4 - 2mm

Attached Files

	Tube-I-zator V3.1 - BOM.xls.zip (7.3 KB, 932 views)
	Tube-I-zator V3.1.pdf (835.7 KB, 2105 views)

The evolution brings the following changes

- Jumper for I2S / simultaneous mode
- latest 3.3V attenuator for I2S & simultaneous mode (by -ecdesigns-)
- free running DEM oscillator (by -ecdesigns-)
- additional U.FL pads for I2S & simultaneous mode
- Separate U.FL-GND route to Digital-GND


Still on the module

- Separate I2S-GND route to Digital-GND
- Separate Analog Output GND route
- Separate GND route for active divider decoupling caps to Analog-GND
- Modified active divider decoupling pads for better SMD 1210 caps soldering
- Un-interrupted ground plane
- Direct shunt voltage inputs with shortest onboard traces
- I2S In-/Outputs with shortest onboard traces
- Onboard Grounded-Gate MOSFET Current Buffer I/V Stage

Attached Files

	Red Baron V5.0.pdf (29.7 KB, 2588 views)
	TDA1541A Project - BOM - for The Red Baron V5.xls.zip (9.2 KB, 1678 views)

+/- Power Supply Module




- up to 15 caps per rail (16mm to 18mm diameter)
- place for decoupling foil cap in each rail
- place for bleeder resistor
- 105µm copper weight
- 2mm pcb
- Immersion Gold
- green soldermask on both side
- Board size 195mm x 120mm

Sold out



Shunt regulator modules
circuit design by Salas




- Shunt regulator module for TDA1541A (+5V, -5V, -15V)
- separate Shunt regulator module for additional parts (+5V)
- 70µm copper weight
- 2mm pcb
- Immersion Gold
- green soldermask on both side
- Board size 147mm x 115mm (46mm x 115mm; single +5V)

TDA1541A shunt module 2pcs. left in stock