Data set 01
1958 Mullard Receiving Tubes
Published operating points and test conditions from this source.
SECTION 1
Rectifier
Other
RMS input maximum
250 V
Rectifier - Half Wave ·Rectifier
PY33
Indirectly heated series-heater half-wave rectifier for television receiver power supplies. Rated for approximately 700 V peak inverse voltage and 325 mA nominal output for high-current series-string equipment.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- IO
- Base pins
- -
- Nominal heater
- 29 V / 300 mA
Description
Series-heater half-wave rectifier for television receivers.
Socket description
International Octal
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- IO
- Base pins
- -
- Nominal heater voltage
- 29 V
- Nominal heater current
- 300 mA
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
Terminal pinout
Electrical assignments shared by every tube using this base designation.
No verified pinout is recorded for this base designation.
Section ratings
1 physical section, each with unique specifications.
Section 1
Rectifier
X-ray radiationInterelectrode capacitances
- Rectifier peak inverse voltage
- 700 V
- Rectifier nominal output current
- 325 mA
- Rectifier peak forward current
- 2.6 A
- Rectifier max heater-cathode voltage
- 625 V
Published valve ratings and characteristics promoted where applicable; additional data retained as parameters.
Source-dependent data
Operating conditions by source
Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.
Data set 02
1963 Mullard
Published operating points and test conditions from this source.
SECTION 1
Rectifier
Other
RMS input voltage maximum
250 V
CapacitorInputFilter
Surge anode current maximum
9.5 A
Pulse
Reservoir capacitance maximum
200 uF
CapacitorInputFilter
Typical rectifier operating point
200 V RMS input; 325 mA output; 209 V DC; 15 ohm minimum series resistance
CapacitorInputFilter
Typical rectifier operating point
220 V RMS input; 295 mA output; 234 V DC; 19 ohm minimum series resistance
CapacitorInputFilter
Typical rectifier operating point
240 V RMS input; 240 mA output; 264 V DC; 23 ohm minimum series resistance
CapacitorInputFilter
Typical rectifier operating point
250 V RMS input; 220 mA output; 280 V DC; 25 ohm minimum series resistance
CapacitorInputFilter
Data set 03
1973 Mazda Valves Binder 2
Published operating points and test conditions from this source.
SECTION 1
Rectifier
Characteristics
Heater voltage
29 V
Published nominal value
Heater current
300 mA
Published nominal value
Other
Maximum reservoir capacitor
200 uF
Published
Maximum mean anode current
325 mA
Published