Crosley D-25 electrolytic symbols and MFD ratings

7/29/2003 6:28:00 AMgreg

Greetings:
Could someone please advise me on the MFD ratings based on the three symbols (square, triangle, circle)for the electrolytic caps for the Crosley D-25, chassis 311 (not the 311-1). The set I am working on has the three symbols and their numerical value almost totally faded from the cardboard can.
Thanks in advance

7/29/2003 8:34:35 AMPoston Drake

Hi Greg,
The 311-1 chassis uses an electrodynamic speaker with field coil as filter choke and two filter capacitors. Your 311 chassis uses a PM speaker and three filter caps. According to the SAMS Photofact, the code is as follows:
Square: 100 mfd @ 150v
Triangle: 30 mfd @ 150v
(Unmarked): 10 mfd @ 150v
In spite of this, it would probably be wise to verify the actual connections in the radio. Off pin 7 of the 35W4 rectifier is a surge resistor (100 ohms, 2 watts) which connects to the 100 mfd input filter cap. From there a 1200 ohm 1 watt filter resistor connects to the 30 mfd filter cap, and from there a 1000 ohm 1/2 watt filter resistor to the 10mfd filter cap.

Poston

:Greetings:
:Could someone please advise me on the MFD ratings based on the three symbols (square, triangle, circle)for the electrolytic caps for the Crosley D-25, chassis 311 (not the 311-1). The set I am working on has the three symbols and their numerical value almost totally faded from the cardboard can.
:Thanks in advance

7/29/2003 2:08:24 PMgreg

:Hi Greg,
:The 311-1 chassis uses an electrodynamic speaker with field coil as filter choke and two filter capacitors. Your 311 chassis uses a PM speaker and three filter caps. According to the SAMS Photofact, the code is as follows:
:Square: 100 mfd @ 150v
:Triangle: 30 mfd @ 150v
:(Unmarked): 10 mfd @ 150v
:In spite of this, it would probably be wise to verify the actual connections in the radio. Off pin 7 of the 35W4 rectifier is a surge resistor (100 ohms, 2 watts) which connects to the 100 mfd input filter cap. From there a 1200 ohm 1 watt filter resistor connects to the 30 mfd filter cap, and from there a 1000 ohm 1/2 watt filter resistor to the 10mfd filter cap.
:
:Poston
:
:
::Greetings:
::Could someone please advise me on the MFD ratings based on the three symbols (square, triangle, circle)for the electrolytic caps for the Crosley D-25, chassis 311 (not the 311-1). The set I am working on has the three symbols and their numerical value almost totally faded from the cardboard can.
::Thanks in advance

7/29/2003 2:09:07 PMgreg

Poston,
Thank you for your assistance.
Greg

:Hi Greg,
:The 311-1 chassis uses an electrodynamic speaker with field coil as filter choke and two filter capacitors. Your 311 chassis uses a PM speaker and three filter caps. According to the SAMS Photofact, the code is as follows:
:Square: 100 mfd @ 150v
:Triangle: 30 mfd @ 150v
:(Unmarked): 10 mfd @ 150v
:In spite of this, it would probably be wise to verify the actual connections in the radio. Off pin 7 of the 35W4 rectifier is a surge resistor (100 ohms, 2 watts) which connects to the 100 mfd input filter cap. From there a 1200 ohm 1 watt filter resistor connects to the 30 mfd filter cap, and from there a 1000 ohm 1/2 watt filter resistor to the 10mfd filter cap.
:
:Poston
:
:
::Greetings:
::Could someone please advise me on the MFD ratings based on the three symbols (square, triangle, circle)for the electrolytic caps for the Crosley D-25, chassis 311 (not the 311-1). The set I am working on has the three symbols and their numerical value almost totally faded from the cardboard can.
::Thanks in advance