Re: Question about Solar regulator for pummer
- Yep, I had the same problem. Try using a different color for the led
that regulates the voltage. I ended up using a small 2mm green led.
Let me know if it works.
--- In beam@y..., "Wrighter" <wrighterpessimist@y...> wrote:
> Greetings all,
> So I was looking at the pummer pages on sb.net, and came across
> Wilf's Solar regulator. It basically charges up the capacitor to
> around 5v, but when it gets dark, outputs a constant 2v on the
> outputs. I breadboarded the circuit, and it works ok, except the
> output is more like 1.7v. This just barely runs my LEDs. I am using
> an N914 diode, as I don't have any of the Germanium variety. Could
> this be the cause?
> Any ideas on increasing the voltage on the outputs?
> Wrighter the Pummer Obsessed.
- I live in Central/South Jersey, near Philadelphia. The small radio
shack near my embarrassingly yuppy town is the one that always has
the special deals. I think it is because they have a very small
store, and thus not much shelf space.
--- In beam@y..., Alex Roy <sandroid2000@y...> wrote:
> --- Wrighter <wrighterpessimist@y...> wrote:
> > Great post, Tom!
> > I was wondering if anyone here worked at RS. I just
> > wanted to say that at our local stores (which means
> > probably everywhere also), they are taking
> > components off shelves and putting them in
> > supposedly-space-saving drawers. In the mean time,
> > they put a bunch of stuff out on the "reduced price"
> > table. I got 5 74HCT14 for 25 cents each, a 3.6V
> > rechargable battery for $.99, a $20 voice-recording
> > IC thingy for $1.99, an IR detector for $.25, and a
> > couple dual-colored LEDs for $.50 each. As happy as
> > I am to get good deals, I'm afraid pretty soon I
> > won't be able to get *anything* at RS. Sure, I don't
> > buy my transistors or caps from them, but I like
> > being able to run down and get some LEDs for the
> > pummer, or some 220ohm resistors when I suddenly
> > discover I've run out.
> > Anyway, check out your local store, see if they are
> > also having deals like this.
> where do you people live! the only stuuf i can get at
> radioshack is a switch or two, if im lucky! is there
> any explanation for the lack of electronics in the
> atlantic provinces, other than the fact thatn we'er
> all poor and stupid?
> gotta go visit uncle grandpa........;)
> > Cheers,
> > Wrighter the Cheap
> > --- In beam@y..., "Greybeard" <grayed@a...> wrote:
> > > --- In beam@y..., Ben Micklin <kcimb@y...> wrote:
> > >
> > > > Another reason to not buy...from the Ratshack.
> > >
> > > > Another object lesson-only buy from electronics
> > > > specialy retailers!
> > > >
> > > For some reason, Yahoo hasn't been emailing posts
> > lately, so I am
> > > trying to catch up. Followed this interesting
> > discussion all the way
> > > through.
> > >
> > > As most of you know by now, I am a trainee manager
> > at a RS dealer
> > > store (been there a whole six weeks, now!) so I
> > feel qualified to
> > > comment. But I stress, I am NOT AN OFFICIAL
> > SPOKESMAN FOR
> > > RADIOSHACK OR INTERTAN and these comments are my
> > own opinions and
> > > observations only!
> > >
> > > I have been shopping at RatShack for as long as I
> > can remember, and
> > > am still finding stuff in the bit box from those
> > old "grab bags" of
> > > miscellaneous parts, including the 3906-like
> > transistors,
> > > unidentified ICs, LEDs of various dimnesses, etc.
> > Maybe they don't
> > > always work for BEAM but I've used them in dozens
> > of other
> > > electronics projects over the last twenty years.
> > And we still have
> > > professional electricians and technicians coming
> > in to buy our
> > > multimeters, which are apparently good quality at
> > a fair price.
> > >
> > > BTW, I take exception to the comment about
> > resistor pricing! Early
> > > in my BEAMing, I bought a package of five 1Meg
> > resistors at
> > > an "electronics specialty retailer" in Red Deer,
> > AB, for which I
> > > paid $2.49, only to later discover a package of
> > six for $0.89 in
> > > RatShack. So, folks, please don't let prejudice
> > blind you. It pays
> > > to shop around.
> > >
> > > It appears to me that RS is going out of
> > components. More and more
> > > lines that I check for availability to order are
> > marked "Sold When
> > > Gone", "Discontinued", or "Discontinued-Devalued."
> > I noticed one
> > > item, originally priced at 14.99, marked down to
> > $0.99! Now, a
> > > little thought will show you that I can't reveal
> > product specifics,
> > > so please don't ask.
> > >
> > > Why dump these lines? Well, one post mentioned
> > good busienss
> > > methods. Face the facts of life: a store has to
> > make a profit.
> > > Falling sales and low margins make these items
> > unprofitable. Not as
> > > many hobbyists as there were back in the 60s,
> > BEAMers not
> > > withstanding. You may think the RS prices are
> > inflated, but I am
> > > astounded at how little the store makes on some
> > things (example: I
> > > sold a $499.99 security monitor. Our cost: $496
> > and change. That's
> > > right, we made a whole $4 on the sale! Another
> > example: staff can
> > > buy items at cost, and recently one of our young
> > staffers grabbed a
> > > router in great excitement at getting a deal. List
> > price: $99.99.
> > > His price: $95.29. Ooee, he saved $4.70!) Other
> > lines have more
> > > reasonable margin: it takes at least 25% to
> > survive. When I worked
> > > at Canada Safeway years ago, it was not uncommon
> > to see markups of
> > > 500% or more.
> > >
> > > But I suggest that at corporate stores (owned and
> > operated by
> > > RadioShack, as opposed to dealer stores which are
> > individually
> > > owned) these items are apt to be marked down to
> > clear them out. And
> > > this means BARGAINS for the alert shopper. Not
> > all of what is being
> > > moved out is relevant to BEAM (do you use many
> > transformers or
> > > project boxes, for example?) but some might be.
> > >
> > > I'll share one more though before I go to bed. Any
> > young person I
> > > see hanging in the electronics wing gets my
> > business card with three
> > > URLs on it: www.solarbotics.com,
> > www.solarbotics.net, and
> > > http://groups.yahoo.com/group/beam. A half dozen
> > have come back to
> > > discuss BEAM further, and after Christmas I hope
> > to have a strong
> > > group going (Hey, Ori, answer my off-list email
> > about your
> > > experience, okay? I really want your input)
> > >
> > > So bash the Shack when you need to (sometimes we
> > deserve it) but
> > > consider doing some PR work in your local store to
> > get them more in
> > > the groove. Bring in a bot or two and get them
> > hooked.
> > >
> > > Tom The Rat in the Shack
> Post your free ad now! http://personals.yahoo.ca