Regarding the 2 resistors (100R, I believe) at the termination of the heater supply in the Francesca pics: Are these present to create a virtual center tap in the absence of a real center tap on the PT heater supply Could they be placed anywhere along the heater circuit
Thanks
Francesca Heater Supply resistors
Moderators: pompeiisneaks, Colossal
Francesca Heater Supply resistors
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Tim
In case the NSA is listening, KMA!
In case the NSA is listening, KMA!
Re: Francesca Heater Supply resistors
Yes
They also act as fuses
You should place them where you want the heater ground to be, sometimes that makes more sense near the front by the ON Lamp if it is heater powered
They also act as fuses
You should place them where you want the heater ground to be, sometimes that makes more sense near the front by the ON Lamp if it is heater powered
Re: Francesca Heater Supply resistors
Thanks for the information. These resistors weren't on any schematic obviously. Virtual center tap was the only explanation I could think of.
Tim
In case the NSA is listening, KMA!
In case the NSA is listening, KMA!
Re: Francesca Heater Supply resistors
When using toneslut transformers, is a Virtual Centre Tap still prefered to connecting the brown/white wire to ground?
Re: Francesca Heater Supply resistors
No, Ground the CT and forget about the resistors.declan wrote:When using toneslut transformers, is a Virtual Centre Tap still prefered to connecting the brown/white wire to ground?