Hammond PWDI13097 Henry 4K Ultra 9.0 HY Resonant DC Choke

PWDI13097 is a resonant DC choke for the Henry 4K Ultra amplifier. It is a Peter W. Dahl design in Hammond's PWDAHL Series of magnetics for amateur radio products and is intended for owners and technicians servicing the 4K Ultra power supply.

The choke is rated 9.0 HY @ 1.0A DC with a 4500 WVDC working voltage. The ordering table states that it requires a 0.2 MFD 10 KVDC capacitor, which is not listed as included and should be sourced for the installation.

PWDI13097 uses an A-0518 C-core and is listed as Style 9 on the series style sheet. Hammond notes that some Hipersil C-Core models in Styles 8, 9 and 10 need to be quoted by its office because of changing charges from C-core suppliers. The approximate weight is 38 lbs and the shipping weight is 38 lbs (17.24 kg).

The part is REACH compliant and RoHS compliant, with UPC 623980142784 and UNSPSC 39121301. PWDAHL units are usually built to order one at a time, and Hammond advises confirming availability by phone or e-mail.

The resonant choke design and its required capacitor distinguish this part from the plain DC filter chokes in the series, so plan the 0.2 MFD 10 KVDC cap into the installation.