Our L23 advanced series DC power supplies are designed to drive HeNe lasers up to 15mW. These drivers include all the benefits of our standard units—long life, maximum output, and greater than 75% efficiency—with the addition of an active filter to reduce current ripple and noise. Our advanced L23 units do not require heat sinking, with the exception of those operating in the AE power range. See below for more information on power ranges. Units in the AE power range provide approximately 7.5 square inches of heat sink.
L23110
The L23110 is a DC input power supply designed for low current ripple on the output. The active filter (option 38) typically reduces switching frequency and noise by an additional 50%. The unit has an input voltage of 10 to 14VDC and is available in four power ranges from 2.5 to 25W.
Specifications
AL*
AM*
AH*
AE*
Dimensions, W x L x H, in. [mm]
1.50 x 4.00 x 1.00 [38.10 x 101.60 x 25.40]
Input voltage (VDC)
10 - 14
10 - 14
10 - 14
10 - 14
Starting voltage (kV)**
>8
>10
>10
>10
Output power (W)
2.5 - 7
5 - 10
9 - 17
16 - 25
Output voltage (VDC)
900 - 1600
1300 - 2000
1700 - 3000
2500 - 3500
Output current (mA)
2.5 - 5
3.5 - 6
4.5 - 7
6 - 7.5
Output current ripple (%)
<1 P-P@ nominal voltage
<1 P-P@ nominal voltage
<1 P-P@ nominal voltage
<1 P-P@ nominal voltage
Efficiency (%)
>75
>75
>75
>75
Temperature (°C)
-20 to +50
-20 to +50
-20 to +50
-20 to +50
Approximate tube output (mW)
1
1 - 3
2 - 5
5 - 15
L23111
The L23111 is a DC input power supply that enables users to incorporate an active filter (option 38) to reduce switching frequency and noise by as much as 50%. Filtering on the input lines (option 37) is also available. This option dramatically reduces conducted emissions from the switching section of the power supply. The L23111 features an input voltage of 10 to 14VDC and is available in four power ranges from 2.5 to 25W.
Specifications
AL*
AM*
AH*
AE*
Dimensions, W x L x H, in. [mm]
1.50 x 4.25 x 1.00 [38.10 x 107.95 x 25.40]
Input voltage (VDC)
10 - 14
10 - 14
10 - 14
10 - 14
Starting voltage (kV)**
>8
>10
>10
>10
Output power (W)
2.5 - 7
5 - 10
9 - 17
16 - 25
Output voltage (VDC)
900 - 1600
1300 - 2000
1700 - 3000
2500 - 3500
Output current (mA)
2.5 - 5
3.5 - 6
4.5 - 7
6 - 7.5
Output current ripple (%)
<1 P-P@ nominal voltage
<1 P-P@ nominal voltage
<1 P-P@ nominal voltage
<1 P-P@ nominal voltage
Efficiency (%)
>75
>75
>75
>75
Temperature (°C)
-20 to +50
-20 to +50
-20 to +50
-20 to +50
Approximate tube output (mW)
1
1 - 3
2 - 5
5 - 15
L23120
The L23120 features advanced circuit stability that provides superior thermal management for the power supply and helps eliminate the effects of outside influences. By employing an active filter (option 38) to the L23120, users can reduce output noise with less than 0.5% P-P output current ripple, for a decrease in switching frequency and noise of 90% over our standard line of power supplies. In addition, users can incorporate option 37 on the input lines to reduce noise caused by conducted emissions from the switching section of the power supply. Option 37 minimizes interference with other equipment on the same power supply bus.
The L23120 has an input voltage of 10 to 14VDC and is available in four power ranges from 2.5 to 25W.
Specifications
AL*
AM*
AH*
AE*
Dimensions, W x L x H, in. [mm]
3.30 x 4.25 x 1.20 [83.82 x 107.95 x 30.48]
Input voltage (VDC)
10 - 14
10 - 14
10 - 14
10 - 14
Starting voltage (kV)**
>10
>10
>10
>10
Output power (W)
2.5 - 7
5 - 10
9 - 17
16 - 25
Output voltage (VDC)
900 - 1600
1300 - 2000
1700 - 3000
2500 - 3500
Output current (mA)
2.5 - 5
3.5 - 6
4.5 - 7
6 - 7.5
Output current ripple (%)
<0.5 P-P@ nominal voltage
<0.5 P-P@ nominal voltage
<0.5 P-P@ nominal voltage
<0.5 P-P@ nominal voltage
Efficiency (%)
>75
>75
>75
>75
Temperature (°C)
-20 to +50
-20 to +50
-20 to +50
-20 to +50
Approximate tube output (mW)
1
1 - 3
2 - 5
5 - 15
*See below for a description of these power ranges.
**At nominal input voltage.
L23110 & L23111 typical installation
L23120 typical installation
Power Ranges For AC & DC Power Supplies
We offer AC and DC input power supplies in a variety of power ranges. The following labeling system is used to denote a particular power range.
Power ranges (DC input units)
Power ranges (AC input units)
L
low power
I
very low power
M
medium power
D
low power
H
high power
No letter
standard power
E
special high power unit with 39% more output power capability than an "H" power range unit
E
special high power unit with 39% more output power capability than a standard unit
Please note: To indicate that the high voltage return lead is at ground potential, an "A" should appear before each letter above. For example, "AH" tells us not only that the high voltage return lead is at ground, but that the power range is high. Ground can be either negative or positive.
