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Need Help with resistors
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electron
Semi Newbie


Joined: 30 Mar 2009
Posts: 8
Location: UK

PostPosted: Mon Mar 30, 2009 3:47 am    Post subject: Reply with quote

Hi
I always knew the photocell as an LDR (light dependant resistor) In some of my circuits I use a phototransistor in place the LDR. (sfh300-3)
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Alan
Site Admin


Joined: 29 Jan 2006
Posts: 1399
Location: Winnipeg, MB

PostPosted: Mon Mar 30, 2009 8:29 am    Post subject: Reply with quote

electron wrote:
Hi
I am a newbie to this forum. I have been playing around with electronics since just after WW2. Those were the days when you could buy tubes for next to nothing. 6L6, 6v6, 5v4, and so it goes on. Now with solid state its a whole new ball game. I am certain I am going to enjoy myself here. I took up photography a few years back and have made a few gizmo`s to aid this. Cool


Sounds interesting. I have never used a tube in my life!
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electron
Semi Newbie


Joined: 30 Mar 2009
Posts: 8
Location: UK

PostPosted: Mon Mar 30, 2009 9:06 am    Post subject: Reply with quote

Alan wrote:
electron wrote:
Hi
I am a newbie to this forum. I have been playing around with electronics since just after WW2. Those were the days when you could buy tubes for next to nothing. 6L6, 6v6, 5v4, and so it goes on. Now with solid state its a whole new ball game. I am certain I am going to enjoy myself here. I took up photography a few years back and have made a few gizmo`s to aid this. Cool


Sounds interesting. I have never used a tube in my life!


It is a sore point with me. In my attic I had cases full of tubes. Then along comes solid state." Ah well I said no need for these now" So out they went on to the garbage tip. Now I read in HI FI mags they are in demand. All that is on offer is Chinese and Russian versions. Mad
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Alan
Site Admin


Joined: 29 Jan 2006
Posts: 1399
Location: Winnipeg, MB

PostPosted: Mon Mar 30, 2009 9:24 am    Post subject: Reply with quote

electron wrote:
Alan wrote:
electron wrote:
Hi
I am a newbie to this forum. I have been playing around with electronics since just after WW2. Those were the days when you could buy tubes for next to nothing. 6L6, 6v6, 5v4, and so it goes on. Now with solid state its a whole new ball game. I am certain I am going to enjoy myself here. I took up photography a few years back and have made a few gizmo`s to aid this. Cool


Sounds interesting. I have never used a tube in my life!


It is a sore point with me. In my attic I had cases full of tubes. Then along comes solid state." Ah well I said no need for these now" So out they went on to the garbage tip. Now I read in HI FI mags they are in demand. All that is on offer is Chinese and Russian versions. Mad


Too bad, some of the vintage tubes are getting top dollar on sites like Ebay.
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