Re: LPF question
¿ªÔÆÌåÓýIf you will eventually use the 100W PA¡ yes you want 200V caps! ? Here is a simpleton approach (there is way more to this, but just for reason):? P=IE, E=IR, so P=E^2/R ¡ so E = SQRT (P * R)¡ if the impedance were a perfect match in the circuits (it won¡¯t be), E = SQRT (100 * 50 = 5000) = 70.7V average¡ and peak is twice that so almost 150VAC!? 100V Caps won¡¯t work! ? ? Dr. William J. Schmidt - K9HZ J62K(J68HZ) 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch ¨C K9ZC Staunton, Illinois ? Owner ¨C Operator Villa Grand Piton ¨C J68HZ Soufriere, St. Lucia W.I. Rent it: ? Moderator: North American QRO Group at Groups.IO. Moderator: Amateur Radio Builders Group at Groups.IO. ? email:? bill@... ? ? From: [email protected] <[email protected]> On Behalf Of Robert Luken W3RDL via groups.io
Sent: Tuesday, May 20, 2025 11:44 AM To: [email protected] Subject: [SoftwareControlledHamRadio] LPF question ? The BOM for the LPF Filter board lists all of the caps as 200V but the schematic shows 100V. The 200V and higher caps are almost non existent on Mouser or DigiKey and the few values there are $1.00+ each. Are 100V parts acceptable for 100W? -- 73 Bob W3RDL ?
|
K9HZ