RDK-83 Power Integrations, RDK-83 Datasheet - Page 27
![KIT DESIGN REF LINKSWITCH LP](/photos/9/14/91433/power_integrations-rdk-83_sml.jpg)
RDK-83
Manufacturer Part Number
RDK-83
Description
KIT DESIGN REF LINKSWITCH LP
Manufacturer
Power Integrations
Series
LinkSwitch®-LPr
Specifications of RDK-83
Main Purpose
AC/DC, Primary Side
Outputs And Type
1, Isolated
Power - Output
1.6W
Voltage - Output
7.7V
Current - Output
210mA
Voltage - Input
85 ~ 265VAC
Regulator Topology
Flyback
Frequency - Switching
66kHz
Board Type
Bare (Unpopulated) and Fully Populated
Utilized Ic / Part
LNK562, LNK563, LNK564
Lead Free Status / RoHS Status
Not applicable / Not applicable
Other names
596-1128
29-Sept-06
RDR-83 7.7 V, 210 mA Adapter with 10 kV surge withstand
11.5 Output Ripple Measurements
11.5.1 Ripple Measurement Technique
For DC output ripple measurements, a modified oscilloscope test probe must be utilized
in order to reduce the pickup of spurious signals. Details of the probe modification are
provided in Figure 20 and Figure 21.
The 5125BA probe adapter (from probe master) is affixed with two capacitors tied in
parallel across the probe tip. The capacitors include one (1) 0.1 µF/50 V ceramic type
and one (1) 1.0 µF/50 V aluminum electrolytic. The aluminum electrolytic type capacitor
is polarized, so proper polarity across DC outputs must be maintained (see Figure 21).
Probe Ground
Probe Tip
Figure 20 – Oscilloscope Probe Prepared for Ripple Measurement (End Cap and Ground Lead Removed).
Figure 21 – Oscilloscope Probe with Probe Master 5125BA BNC Adapter (Modified with wires for probe
ground for ripple measurement, and two parallel decoupling capacitors added).
Power Integrations
Tel: +1 408 414 9200 Fax: +1 408 414 9201
Page 27 of 36
www.powerint.com