Thank you one of the best explanations and builds of a dummy load. I am going to build this but will incorporate 4-8-16 ohms and at 100 watts and 200 watts with a selector switch for ohms and watts. I will also do it on a better heat sink with a fans for cooling. Again thank you. I will also be a subscriber.
David adding BNC sockets on the unit you can then connect a scope to both outputs via your ground isolation,also a switch to select 4 ohms or 8 ohms,also an AC voltmeter socket to determine power output into your desired load,no criticism on your project its very good just food for discussion,best regards keep up the good work!
Hi Colin, Thanks for your interest and suggestions. As I have nothing on my bench at the moment, I may use some of my time to make some mods to the load board. I don't use it often but the extra options could be useful. Thanks Dave
You should get yourself an old cpu heat sink with fan. There may be plenty around from old computers. if the area is not big enough you could fix a flat aluminum plate around 3mm thick to the cpu heat sink with countersunk bolts. The resistors will fit nicely then. I would also have fitted a BNC socket for the scope with a 10 to 1 resistive divider (90K-10k). Good tool for audio testing simple yet effective.
You could use 4 x 50 watt but for sustained use I would use 2 x 16 ohm 100 watt resistors n a series parallel combination if you need an 8 ohm load. They will still get hot so the addition of a large heat sink or fan would help. Dave
Thank you one of the best explanations and builds of a dummy load. I am going to build this but will incorporate 4-8-16 ohms and at 100 watts and 200 watts with a selector switch for ohms and watts. I will also do it on a better heat sink with a fans for cooling. Again thank you. I will also be a subscriber.
It looks great Dave, I was very impressed when I saw how cool it looked!
David adding BNC sockets on the unit you can then connect a scope to both outputs via your ground isolation,also a switch to select 4 ohms or 8 ohms,also an AC voltmeter socket to determine power output into your desired load,no criticism on your project its very good just food for discussion,best regards keep up the good work!
Hi Colin,
Thanks for your interest and suggestions. As I have nothing on my bench at the moment, I may use some of my time to make some mods to the load board. I don't use it often but the extra options could be useful. Thanks
Dave
You should get yourself an old cpu heat sink with fan. There may be plenty around from old computers. if the area is not big enough you could fix a flat aluminum plate around 3mm thick to the cpu heat sink with countersunk bolts. The resistors will fit nicely then.
I would also have fitted a BNC socket for the scope with a 10 to 1 resistive divider (90K-10k).
Good tool for audio testing simple yet effective.
Nice work, thanks for the top tip. Going to be making one similar. Subscribed as well
Thank you for your comment, enjoy constructipn,
Dave
I'd use some thermal compound + a finned heatsink and a nice quiet 120mm fan.
looks great,nice job.
Thanks, only used it a couple of times but works well.
I know it's kind of randomly asking but does anyone know a good site to watch new movies online?
@Devin Ace Try Flixzone. You can find it on google =)
@Devin Ace try FlixZone. Just google for it :)
@@julianbraylen6049
Would not be happy with this, I stick to Netflix Nd Prime
Nice. What wattage should resistors be if I wanted to use it on a single channel 100 W guitar amp?
You could use 4 x 50 watt but for sustained use I would use 2 x 16 ohm 100 watt resistors n a series parallel combination if you need an 8 ohm load. They will still get hot so the addition of a large heat sink or fan would help.
Dave
Thanks
I think - it is 100W 8ohm for chanel. If You connected two resistrors 50W each...
You are right, thanks.