Fra: [email protected] <[email protected]> p? vegne af Gregory Beat via groups.io <w9gb@...>
Sendt: 14. februar 2024 14:58
Til: [email protected] <[email protected]>
Emne: Re: [DRAKE-RADIO] Drake PS7 Filtercap. Spec.

[Edited Message Follows]

Brent -

Drake PS7 Power Supply used two (2) 15,000 mFd, 30 VDC electrolytic capacitors

Let’s start with the Datasheets (17 pages) for Mallory Electrolytic Capacitors (circa 1980s - 1990s)

The Drake PS7 used Screw Terminal Electrolytic capacitors for DC Power Filtering.
—
In the 1990s, Cornell Dubliner Electronics (CDE) acquired the Mallory Electrolytic capacitors.


READING Parts Number for CDE Electrolytic Capacitors


The CGR series of electrolytic capacitors are manufactured by CDE today.
Mouser, Digi-Key, & Master Electronics are distributors,
BUT this specific model may have to be Ordered (Production Lead Time)

Pricing will be in the range of $50 to $60 each (depending on Distributor’s orders)
CGR153U030V3L : 15,000 mFd, 30 VDC (45 VDC surge), 2” diameter, 3.67” height

CDE shows 67 “in stock” (CGR153U030V3L)


MASTER ELECTRONICS has 63 pieces, In Stock. $66.97 Each.


The CGR series (CDE, former Mallory) was updated in 2005 to meet global RoHS (no lead)
CDE recommends the 550C series for New Designs (see below).


CDE Type 550C, 105°C High Ripple, Inverter Grade, Aluminum


SUBSTITUTION CRITERIA?

1. Match for Capacity (mFd) and Working Voltage (VDC)
2. Select for Screw Terminal Spacing?
3. Select to be No Larger than Original (Diameter, Height)

==
The Mallory “FP” Twist-Lock versions were acquired by Antique Electronic Supply (Arizona)
They manufacture these Metal Can capacitors with original Mallory equipment (imported from Mexico)

List of CE Manufacturing Products

—
Hayseed Hamfest (Iowa) is another “FP”-type metal can capacitor supplier for restorers
of 1950s thru 1970s vacuum tube audio amplifiers and radios.

==
Greg, W9GB