3B Series Overview | 3B Series Model Defintions | Available 3B Series Modules | 3B Series Backplanes | 3B Series Power Supplies
3B Series Accessories | 3B Series Configuration Guide | 3B Series Custom Configuration Ranges | All Series Modules
Family of AC/DC Supplies
Mountable Directly on Backplane Using Supplied Hardware
Current Limit Short Circuit Protection
Low Output Ripple and Noise
Excellent Line and Load Regulation Characteristics
Free-Air Convention Cooling: No external Heat Sink Required
|Analog Devices' line of AC/DC supplies offer system designers a means of supplying a reliable, easy to use, low cost solution to powering the 3B Series Signal Conditioning subsystem. These models provide high accuracy, short circuit protection, regulated outputs with very low noise and ripple characteristics. All supplies can be mounted directly on the 3B Series backplanes, Models 3B01, 3B02 and 3B03, using supplied mounting clip and hardware.||
Order Now Model AC1301
Options for Powering a Backplane
Several backplane powering options are available to a user. The 3B Series Subsystem can operate from an AC/DC power supply or a DC/DC converter, mounted directly on the backplane, or external ±15 V DC and +24 V DC supplies can be used. The power supply voltages are bussed to all signal conditioners on the backplane. The +24 V DC voltage is supplied as loop power for all module current outputs. Supply current is a function of the modules that are actually used - see table below.
3B Series Module Current Requirements
1 Model 3B17 module typically needs 40 mA ±5 mA for the LVDT/RVDT drive current. The supply current for the LVDT/RVDT current is 75% of the LVDT/RVDT rms current.
If both +24 V DC and ±15 V DC are supplied from an external source, the power supply requirements must be satisfied for the desired number of modules.
If the user wishes to use a +15 V supply for the module current outputs - loop power - in place of +24 V DC, the +15 V DC from the AC/DC supply can be strapped to the loop power on connector P3. With this arrangement, the load resistance on all module current outputs is limited to 400 Ω> maximum; with +24 V DC supply voltage, the load resistance is increased to 850Ω maximum.
Selecting a Power Supply
The following supplies, available from Analog Devices, operate over a -25°C to +70°C temperature range. Refer to the power supply specification table for more detailed information on each supply.
Model AC1301 is an AC/DC dual output, ±15 V DC power supply providing ±350 mA; it is mounted on the backplane with supplied mounting clip and hardware.
Model AC1307 is an AC/DC triple output, +15 V DC, -15 V DC and +24 V DC power supply providing +800 mA, -225 mA and +350 mA respectively. Model AC1307 is mounted on the backplane using supplied hardware.
|Description||Model AC1301||Model AC1307|
|Input Voltage Range||105 V rms to
125 V rms
|105 V rms to
125 V rms
|Frequency||50 Hz to 250 Hz||50 Hz to 400 Hz|
|Output Voltage||±15 V dc||+15 V dc/-15 V dc/
+24 V dc
|Output Current||±350 mA||+800 mA/-255 mA/
|Short Circuit Protection2||Current Limited||Current Limited|
|Voltage Accuracy||±1%, max.||±5% max.
(±15 V dc Outputs)
+20 V dc min. to
+32 V dc max.
|Line Regulation||±0.02% max.||±0.1%|
|Load Regulation||±0.02% max.||±0.1%|
|Ripple & Noise||0.5 mV rms, max.||±20 mV pk-pk
(±15 V dc Outputs)
1 V pk-pk
(+24 V dc Output)
|Breakdown Voltage||2500 V rms, min.||1500 V rms, min.|
|Operating Temperature Range||-25°C to +70°C||-25°C to +70°C|
|Storage Temperature Range||-25°C to +85°C||-25°C to +85°C|
|Cooling||Free Air Convection||Free Air Convection|
|Mounting Threaded Inserts||Four,
#4-40 x 0.15" deep
1 Accuracy for +24 V dc output: +20 V dc minimum with low line and full load; +32 V dc maximum with high line, 20 mA load.
2 Substantial overload can be withstood, including direct short. Prolonged operation should be avoided since excessive temperature rises will occur.
Specifications subject to change without notice.