Hi,
New from BC Canada.
My hobby is audio electronics. When I was a student, I built a EL84 PP stereo amplifier for myself and helped to build a mono EL34 PP amp for the PA system of my secondary school. 🙁
I built most of my own audio electronics:
* Two mono block Mosfet power amplifers, each with six pairs of Hitachi Mosfets.
* A line pre-amp using J-fets.
* A phono amp for MC and MM using J-fets
* An ac power supply for my TD160 turntable.
* DACs using AES 20/21,DF1700P,PCM63P/PCM1702P.😎
My previous profession was EE and now I have more time to join this forum and learn more from all of you experts.
The Seven😎
New from BC Canada.
My hobby is audio electronics. When I was a student, I built a EL84 PP stereo amplifier for myself and helped to build a mono EL34 PP amp for the PA system of my secondary school. 🙁
I built most of my own audio electronics:
* Two mono block Mosfet power amplifers, each with six pairs of Hitachi Mosfets.
* A line pre-amp using J-fets.
* A phono amp for MC and MM using J-fets
* An ac power supply for my TD160 turntable.
* DACs using AES 20/21,DF1700P,PCM63P/PCM1702P.😎
My previous profession was EE and now I have more time to join this forum and learn more from all of you experts.
The Seven😎
The Seven said:
Welcome Mr Seven.
Can you refine where in BC? BC is big enuff to stuff a number of European countries into 😀
I'd be interested in more detail on that TD160 power supply. I have to resurrect a TD165 and that might be useful.
dave
Welcome!!!
The more Canadians the better! 😉
Oh, how I miss Vancouver... BC is the best place on earth!
The only place better is a BC full of audio hobbyists! 😀
Maybe I'll have to come back to UBC for some graduate studies...
Anyway, welcome to the forum! Enjoy...
The more Canadians the better! 😉
Oh, how I miss Vancouver... BC is the best place on earth!
The only place better is a BC full of audio hobbyists! 😀Maybe I'll have to come back to UBC for some graduate studies...
Anyway, welcome to the forum! Enjoy...
By the way, is your name in reference to the Group of Seven? Maybe the Magnificent Seven? 😉 Just curious...
Dave & DIY fanatics,
Residing in Vancouver BC to be more precisely.
My TD160 was migrated from a 50Hz country. So a 50 Hz power supply was designed and built so that it will have the correct rpm in a 60 Hz country as well.
A simple Wien-bridge using opamp (1/2 of 5532) and a pair of low power PNP/NPN transistors driving a step-up ( 10:200) transformer. The dc supply to the opamp and PNP/NPN is +/- 15 volt.
The output frequency is adjusted to 50 Hz by adjusting the R in the RC Wien-bridge. The output voltage is adjusted to 110 volt by adjusting the R in the amplitude-ratio (R-ratio) of the Wien-bridge. The output power is about 1 to 1.5 watt which is enough for the TD160 motor.
The output waveform is as sinusoidal as my signal generator and is very stable. TD160 runs happier with this electronic 50Hz supply than a raw 50 Hz supply. It does give a better sonic effect to my system. 😎
The Seven 😎
Residing in Vancouver BC to be more precisely.
My TD160 was migrated from a 50Hz country. So a 50 Hz power supply was designed and built so that it will have the correct rpm in a 60 Hz country as well.
A simple Wien-bridge using opamp (1/2 of 5532) and a pair of low power PNP/NPN transistors driving a step-up ( 10:200) transformer. The dc supply to the opamp and PNP/NPN is +/- 15 volt.
The output frequency is adjusted to 50 Hz by adjusting the R in the RC Wien-bridge. The output voltage is adjusted to 110 volt by adjusting the R in the amplitude-ratio (R-ratio) of the Wien-bridge. The output power is about 1 to 1.5 watt which is enough for the TD160 motor.
The output waveform is as sinusoidal as my signal generator and is very stable. TD160 runs happier with this electronic 50Hz supply than a raw 50 Hz supply. It does give a better sonic effect to my system. 😎
The Seven 😎
hifiZen said:
Neither the Seven Dwarfs in Snow White (because of normal size), nor the Manificent Seven ( no guns except soldering gun), nor the Marantz Seven preamp ( I like to own one). Happened to be the 7th child in the family. 😎
The Seven😕
Hi Seven and all,
I am thinking of having a DIY Audio GeekFest at my house in November and just testing the waters to see if anyone is interested.
If we can get a few people together I will put on a Buffet and we can compare soldering iorns etc.
I am in East Vancouver.
Tony D.
I am thinking of having a DIY Audio GeekFest at my house in November and just testing the waters to see if anyone is interested.
If we can get a few people together I will put on a Buffet and we can compare soldering iorns etc.
I am in East Vancouver.
Tony D.
Tony D. said:
It's a $100 ferry ride, but i might be able to amortize that across a couple guys if the timing is right.
dave
Dave if you want I live out in Delta so if you wanted to do the walk on thing I could pick you up and drop you off. Man what I won't do for a good buffet
Guy Smiley said:
That is a superb offer, and makes the trip much more doable. Barring bad timing (for me) of the event count me in. I'll try to bring ChrisB with me.
dave
Allright! I am sure that we can also count on KDT as well as ThingyNess and I will invite Quest from the Bottlehead board, he is more of a SET kind of guy but he is great to talk to and extremely knowledgable.
I am thinking along the lines of a curry, barbecue, sushi and Philipino Buffet, my girlfriend will supply the Philipino items and I will take care of the rest so food wise just bring your appetites and whatever libations you enjoy.
If anyone wants to bring a project for discussion or demonstration that would be great, I am running single ended only but for balanced gear I am sure we can work something out.
I am thinking of November 23, okay with everyone?
Tony D.
I am thinking along the lines of a curry, barbecue, sushi and Philipino Buffet, my girlfriend will supply the Philipino items and I will take care of the rest so food wise just bring your appetites and whatever libations you enjoy.
If anyone wants to bring a project for discussion or demonstration that would be great, I am running single ended only but for balanced gear I am sure we can work something out.
I am thinking of November 23, okay with everyone?
Tony D.
cool! A GeekFest!
Actually, I'm planning to be in Vancouver over the US Thanksgiving weekend (Nov. 28-31), so if you have it then, maybe on the Saturday, you can count me in too!
Cheers,
Actually, I'm planning to be in Vancouver over the US Thanksgiving weekend (Nov. 28-31), so if you have it then, maybe on the Saturday, you can count me in too!
Cheers,
Welcome - the Seven
I hope you guys have a nice gathering.
It's been 7 or 8 years since my wife and I were in Vancouver. Gorgeous place - nice people.
Best sushi I ever had
Seems like a nice group of folks that will be at the gathering also.
Ken L😉
I hope you guys have a nice gathering.
It's been 7 or 8 years since my wife and I were in Vancouver. Gorgeous place - nice people.
Best sushi I ever had
Seems like a nice group of folks that will be at the gathering also.
Ken L😉
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