Ea Elektro Automatik EA Elektro-Automatik EA-ELR 9250-140 3U Electronic Load 0 - 140 A 0 - 250 Vdc 0 - 7000 W 33200406 データシート

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EA Elektro-Automatik GmbH

Helmholtzstr. 31-33 • 41747 Viersen

Germany

Fon: +49 2162 / 3785-0

Fax: +49 2162 / 16230

Schematic diagram:

Application and result:

A triangular wave signal for input current (direct) or input 

voltage (indirect) is generated. The positive and negative 

slope times are variable and can be set independently.
The offset shifts the signal on the Y-axis.
The sum of the intervals t1 and t2 gives the cycle time 

and its reciprocal is the frequency.
Example: a frequency of 10 Hz is required and would 

lead to periodic duration of 100 ms. This 100 ms can 

be freely allocated to t1 and t2, e.g. 50 ms:50 ms (isos-

celes triangle) or 99.9 ms:0.1 ms (right-angled triangle 

or sawtooth).

The following parameters can be configured for a rectangular wave function:

I(A), U(A)

0...(Nominal value - (Off)) of U, I A = Amplitude of the signal to be generated

I(Off), U(Off) 0...(Nominal value - (A)) of U, I

Off = Offset, based on the foot of the rectangular wave

t1

0.1 ms...36000 s

Time (pulse width) of the upper level (amplitude)

t2

0.1 ms...36000 s

Time (pause width) of the lower level (offset)

Schematic diagram:

Application and result:

A rectangular or square wave signal for input current 

(direct) or input voltage (indirect) is generated. The 

intervals  t1  and  t2  define  how  long  the  value  of  the 

amplitude (pulse) and how long the value of the offset 

(pause) are effective.
The offset shifts the signal on the Y axis.
Intervals t1 and t2 can be used to define a duty cycle. 

The sum of t1 and t2 gives the period and its reciprocal 

is the frequency. 
Example: a rectangular wave signal of 25 Hz and a 

duty cycle of 80% are required. The sum of t1 and t2, 

the period, is 1/25 Hz = 40 ms. For a duty cycle of 80% 

the pulse time (t1) is 40 ms*0.8 = 32 ms and the pause 

time (t2) is 8 ms