Hi guys,
I am building a RH84 V2 EL84 valve amp and need to source a 47uf 450v motor run capacitor and a 200uf 450v electrolytic or motor run capacitor for the CLC Power Supply. I am struggling to find a suitable 200uf 450v capacitor. Should I install two 100uf in parallel or is it better to use a single 200uf?
For the 47uf 450v I am thinking of using this Kemet motor run capacitor
KEMET 46uF Polypropylene Capacitor PP 450V ac ±5% Tolerance C87 Series
RS Stock No. 911-9421 Mfr. Part No. C878BF35460SA0J
KEMET Motor Run Capacitors, C87 Series
C87 Series Polypropylene metallised film with cylindrical aluminium can type filled with resin; faston, plastic deck or cable terminals and overpressure safety device.
Features and Benefits:
High capacitance density
Self-healing metal layer
VDE, CQC and UL810 approved
Rated frequency of 50 Hz and 60 Hz
Safety device protection
C878BF35460SA0J | KEMET 46μF Polypropylene Capacitor PP 450V ac +-5% Tolerance C87 Series | RS Components
It does have 4 tab connections so I am not quite sure how raptors connect it
I have found a CD60 capacitor on Amazon that all look similar made in China with a 5% tolerance. They dont say if they are polypropylene film unlike the one further below which is more expensive.
Capacitance: 200uF ±5%
Rated Voltage: AC 250-450V
Rated Frequency: 50/60Hz
Operating Temp. Range: -40℃ ~ +85℃
Size: 10.2x5cm/4.01x1.97"
FATTERYU 250-450V AC 200uF Appliance Motor Start Run Capacitor CD60: Amazon.co.uk: Kitchen & Home
Or this one here which is more expensive and 10% tolerance
Polypropylene Film CD60 Motor Rub Capacitor
Product name: CD60 motor start SH capacitor
Rated Capacitance: 200uF
Rated Voltage : 450 V AC（Compatible with AC 250V）
Tolerance: 10 %
Rated Frequency: 50/60 Hz
Size：1.7 x 3.9 inches
Wire Length: 7.8 inches
Color：White
Other: Non polar capacitor, Safe, durable and reliable,Widely used in washing machine/air conditioner/air compressor for better working motor
Package content: 1 x Capacitor
CD60 200uF MFD Polypropylene Film Motor start Capacitor AC 450V/250V VAC Volt 50/60Hz 2 Wire Safe Durable and Reliable: Amazon.co.uk: Business, Industry & Science
Out of these two which is the best to use, or should I go with a well known electrolytic from Vishay, Rubycon or Nichicon ?
Finally, is it worth adding a parallel suitable film cap around 10% of the value on these as well or is that not needed or beneficial in the psu side of things.
Thanks for your help.
I am building a RH84 V2 EL84 valve amp and need to source a 47uf 450v motor run capacitor and a 200uf 450v electrolytic or motor run capacitor for the CLC Power Supply. I am struggling to find a suitable 200uf 450v capacitor. Should I install two 100uf in parallel or is it better to use a single 200uf?
For the 47uf 450v I am thinking of using this Kemet motor run capacitor
KEMET 46uF Polypropylene Capacitor PP 450V ac ±5% Tolerance C87 Series
RS Stock No. 911-9421 Mfr. Part No. C878BF35460SA0J
KEMET Motor Run Capacitors, C87 Series
C87 Series Polypropylene metallised film with cylindrical aluminium can type filled with resin; faston, plastic deck or cable terminals and overpressure safety device.
Features and Benefits:
High capacitance density
Self-healing metal layer
VDE, CQC and UL810 approved
Rated frequency of 50 Hz and 60 Hz
Safety device protection
C878BF35460SA0J | KEMET 46μF Polypropylene Capacitor PP 450V ac +-5% Tolerance C87 Series | RS Components
It does have 4 tab connections so I am not quite sure how raptors connect it
I have found a CD60 capacitor on Amazon that all look similar made in China with a 5% tolerance. They dont say if they are polypropylene film unlike the one further below which is more expensive.
Capacitance: 200uF ±5%
Rated Voltage: AC 250-450V
Rated Frequency: 50/60Hz
Operating Temp. Range: -40℃ ~ +85℃
Size: 10.2x5cm/4.01x1.97"
FATTERYU 250-450V AC 200uF Appliance Motor Start Run Capacitor CD60: Amazon.co.uk: Kitchen & Home
Or this one here which is more expensive and 10% tolerance
Polypropylene Film CD60 Motor Rub Capacitor
Product name: CD60 motor start SH capacitor
Rated Capacitance: 200uF
Rated Voltage : 450 V AC（Compatible with AC 250V）
Tolerance: 10 %
Rated Frequency: 50/60 Hz
Size：1.7 x 3.9 inches
Wire Length: 7.8 inches
Color：White
Other: Non polar capacitor, Safe, durable and reliable,Widely used in washing machine/air conditioner/air compressor for better working motor
Package content: 1 x Capacitor
CD60 200uF MFD Polypropylene Film Motor start Capacitor AC 450V/250V VAC Volt 50/60Hz 2 Wire Safe Durable and Reliable: Amazon.co.uk: Business, Industry & Science
Out of these two which is the best to use, or should I go with a well known electrolytic from Vishay, Rubycon or Nichicon ?
Finally, is it worth adding a parallel suitable film cap around 10% of the value on these as well or is that not needed or beneficial in the psu side of things.
Thanks for your help.
You can parallel two 100uF 450V electrolytics for the supply. I wouldnt use motor runs due to size.
there are some cheap industrial grade MKT 40V 1100V epcos on ebay right now.. Those are crazy good
there are some cheap industrial grade MKT 40V 1100V epcos on ebay right now.. Those are crazy good
eBay item number:
312973380905
These are made for industrial purposes, they are the closest thing i know that approaches an ideal capcitor.
312973380905
These are made for industrial purposes, they are the closest thing i know that approaches an ideal capcitor.
