PTV MANUAL
1
118012-001 REV B
Chapter 1
I
NTRODUCTION
1.1 Description of the PTV Series
he PTV series of high voltage power supplies
provides very well regulated, low ripple high voltage
in a highly efficient, compact design. The
dramatically reduced size of the PTV Module, compared
to traditional high voltage modules, is obtained by a state
of the art off-line resonant converter. The resonant
converter utilizes a unique control scheme, which allows
constant frequency operation while maintaining high
efficiency. The high efficiency is obtained by zero
current switching (ZCS) resonant control. High operating
frequency, typically 60KHz, allows for very low ripple
and excellent dynamic response capabilities.
The DC output voltage and current are controllable over
the full range of operation. Monitoring and control
signals are provided for simple, yet flexible control of the
power supply. The PTV series operates from 115VAC
+/- 10%, or /- 10%, at 50/60 Hz single phase.
(User should specify input voltage at time of ordering).
The PTV series operates at 200W continuous without the
need for forced air cooling. The ambient temperature
must be kept below the maximum rating as specified in
1.2. Consult Spellman Sales Department for higher
power capabilities of the PTV series (up to 600W peak).
The standard warranty applies to the PTV modules.
Consult factory about the warranty for custom PTV
modules.
1.2 PTV Specifications
Output Control
: Voltage and current are externally
programmable over the entire range from zero to
maximum rating via 0-10VDC reference or
potentiometer. (Other scale factors for control and
monitoring can be provided i.e. 1 volt per 10KV, 1
volt per 10mA etc.).
Input Voltage:
115Vac
10%, 50/60Hz, single
phase. (220VAC
10%, 50/60Hz, single phase,
internally switchable). Consult factory for other than
115VAC input voltage.
Voltage Regulation:
Load Regulation
: 0.01% of full voltage for a no
load to full load change.
Line Regulation
:
0.01% of full voltage over the
specified input voltage range.
Current Regulation
:
Load Regulation:
0.05%
25uA from 0 voltage to
full voltage.
Line Regulation
:
0.01% of full current over the
specified input voltage range.
Ripple
: 0.1% p-p of output voltage.
Polarity:
Positive and Negative polarity with respect
to ground. (Specify at time of ordering).
Stability:
0.02% per hour after 1/2 hour warm up.
Temperature Coefficient
: 150 ppm per
C.
Temperature:
Operating: 20
C to +50
C
Storage: -40
C to +80
Monitoring
:
0-10VDC corresponding to 0-100% of output
voltage.
1-10VDC corresponding to 0-100% of output
current.
(Other scale factors available).
Control
:
Logic level control for high voltage
enable/disable.
IMPORTANT
This control signal in not a safety
interlock and should not be used for
protection from high voltage generation
for safety purposes.
T
