|
Television Standards Converters, Modulators etc Standards converters, modulators anything else for providing signals to vintage televisions. |
|
Thread Tools |
19th Oct 2006, 7:40 pm | #1 |
Heptode
Join Date: Dec 2003
Location: South Yorkshire, UK.
Posts: 900
|
Aurora RF Connector getting Warm.
Is it normal for the RF output connector on the Aurora to get warm in operation. I have checked the supply voltage and input on the TV for any unwanted Vdc or short and this is all OK.
This is probably normal but I wanted to make sure. Regards Chris.
__________________
Every Silver Lining Has Its Cloud https://youtube.com/channel/UCvBpiuUUnErJlNBm6DWb3Ww |
19th Oct 2006, 7:42 pm | #2 |
Retired Dormant Member
Join Date: Dec 2003
Location: North London, UK.
Posts: 6,168
|
Re: Aurora RF Connector getting Warm.
The whole converter does get slightly warm, especially if the DC power supply is over 9V. It will run on as little as 7V and stay cooler too. Over 12V is not recommended.
At higher input voltages most of the heat is dissipated in the regulator that makes 5V for the whole converter. There are other regulators that take 5V and produce the lower voltages needed by parts of the circuit. All the regulators are linear because the total amount of power doesn't justify more complex and expensive switchmode designs. |
19th Oct 2006, 9:36 pm | #3 |
Tetrode
Join Date: Jun 2005
Location: Wilton, Salisbury, Wiltshire, UK.
Posts: 66
|
Re: Aurora RF Connector getting Warm.
I've had mine on all day and yes you're right the RF connector is warm. It doesn't seem to be any warmer than the rest of it though. I guess it must be normal.
Richard |
20th Oct 2006, 12:05 am | #4 |
Hexode
Join Date: Jul 2004
Location: Michigan USA
Posts: 325
|
Re: Aurora RF Connector getting Warm.
The metal RF connector will feel slightly warm. This is normal. The main power regulator is right next to it on the circuit board, so depending on what voltage your putting into the unit, some of the heat will dissipate out the connector. As Jeff mentioned, with 7VDC in, there is almost no residual heat, with 12VDC there is about 1 watt of lost energy to dissipate.
Darryl |