Section 6 operating characteristics, Non-pulsed operation, Constant voltage – MK Products MK 2000A User Manual
Page 12
MK 2000A - Owner's Manual - Page 12
Background Slope: Adjustable from Constant Voltage to Constant Current.
Pulse Slope: Adjustable from Constant Voltage to Constant Current.
Pulse Height: This control determines the height of the output pulse. The
pulse is added on top of the background level so the total output during
the pulse is the sum of the Background Level setting plus the Pulse Height
setting.
Inductance: This control creates the electronic equivalent of output
inductance. This limits the rate of rise of current during short circuit transfer
without limiting the peak current. This control is factory set to 15%; however,
when -0- inductance is required, it may be disabled by placing the inductance
switch to remote.
Pulse Rise Time: This control determines the rise (and symmetrical fall) time
of the pulse. It may be used to change the rectangular pulse to a trapezoidal
or triangular shape. This control is adjustable through an external control
computer only.
Pulse Frequency: This control may be set to provide pulses at any repetition
rate from 20 pulses per second to 2000 pulses per second.
Heat: This control adjusts the pulse frequency while maintaining a preset
pulse width. The "ON TIME" (pulse width) is determined by the wire diameter
control.
Mode Selector: The mode selector switch allows the frequency and
pulse width to be controlled independently of each other or operate in the
“Heat” Mode.
** See Control Panel Detail (Section 2)
Section 6 OPERATING CHARACTERISTICS
The operating characteristics of the MK2000A cover a very wide spectrum,
however the operation may be easily understood by considering it in
relationship to conventional supplies.
Non-Pulsed Operation
Constant Voltage
Operation as a Constant Voltage (potential) power supply is shown in
Figure 1. This is the operation obtained when the Pulse Height control is set
to -0- and the Pulse Level is disabled by setting it to 100% with the Pulse
Slope set to -0-.
With the Background Slope control set to -0-, the Background Level control