Jim Audiomisc
pfm Member
I had a friend called Richard T.who worked for and with Clive S.
If that's the Richart T. I know, he's the man who now hosts the UKHHSoc pages.
I had a friend called Richard T.who worked for and with Clive S.
Hewlett Packard calculators all used Reverse Polish notation too. They were pretty popular amongst my engineering and physics friends at uni. I could sort of use it - and if you do much programming RPN suddenly makes sense. It is a bit like speaking German or Latin, the action is at the end of the sentence.
I was always buying top of the range TI calculators - still have a TI85 somewhere
I've been a fan of Clive Sinclair since around 1959 when I bought a slim book on radio circuits. I think he was 19 when he wrote it and his ideas changed the way I viewed electronics. Two spring to mind a) using an OC71 (an audio transistor) as the RF stage for a radio receiver for Droitwich on 1500m and b) using a crystal radio voltage tripler tuned to Droitwich as a DC power supply that could be used to power a simple TRF radio (I lived not too far away).
In the days of mono my younger brother built an amp using the z30 module and we used this at parties to great effect with my guitar speaker cabinet (I had my own band) that had two 12" units. Later I used two z50s to build a stereo power amp using top notch paper capacitors for the power supply and output decoupling. These caps were paper and HUGE but in those days we had the government surplus shops where you could pick these and other stuff up like radar units for peanuts.
A friend of mine who was best man at my wedding and had an IQ of 186(!) was a member of the inner circle of MENSA and knew Clive Sinclair who was chairman at the time. He used to try out new questions on me and tried to get me to join but I just didn't have the time to spare. If only(!)
Cheers,
DV
I've been a fan of Clive Sinclair since around 1959 when I bought a slim book on radio circuits. I think he was 19 when he wrote it and his ideas changed the way I viewed electronics. Two spring to mind a) using an OC71 (an audio transistor) as the RF stage for a radio receiver for Droitwich on 1500m and b) using a crystal radio voltage tripler tuned to Droitwich as a DC power supply that could be used to power a simple TRF radio (I lived not too far away).
In the days of mono my younger brother built an amp using the z30 module and we used this at parties to great effect with my guitar speaker cabinet (I had my own band) that had two 12" units. Later I used two z50s to build a stereo power amp using top notch paper capacitors for the power supply and output decoupling. These caps were paper and HUGE but in those days we had the government surplus shops where you could pick these and other stuff up like radar units for peanuts.
A friend of mine who was best man at my wedding and had an IQ of 186(!) was a member of the inner circle of MENSA and knew Clive Sinclair who was chairman at the time. He used to try out new questions on me and tried to get me to join but I just didn't have the time to spare. If only(!)
Cheers,
DV
Different Sinclair I think
If that's the Richart T. I know, he's the man who now hosts the UKHHSoc pages.
I still have some Babani books written by Sinclair along similar lines! Yep I built the crystal sets etc when about 9!
No it's Clive Sinclair. There is an Ian Sinclair that writes electronics books though. The Clive ones are 1960's, maybe a little earlier, and full of designs using OC71, OC44, AF117 etc
I was thinking of the very prolific Ian Sinclair. If that old, Clives books are before my time.No it's Clive Sinclair. There is an Ian Sinclair that writes electronics books though. The Clive ones are 1960's, maybe a little earlier, and full of designs using OC71, OC44, AF117 etc
I had a Sinclair 2000 integrated in the early '70s, fed by my SP25 deck, driving DIY speakers with Goodmans Axiom 201 drivers. The amp self-destructed after about 2 years, after which I bought a Sinclair Neoteric 60 integrated : http://diy.torrens.org/Electronics/Neoteric/index.html. I thought the design of this amp was FANTASTIC ! It was a poor man's Lecson http://lecsonaudio.com/?page_id=6 , in design, if not in sound.
Edit : I see Mike just mentioned Richard Torrens in his post above : my first link on the Neoteric 60 is from his website !
Goodness, this takes me back a few decades. I do wish I’d kept all my old copies of Practically Electronics.....
I used to use one of the TI calculators when at Armstrong as it was the closest they could get to a 'computer' at the time. I then took it with me and used for a few years afterwards. My old notebooks still have listings of some of the IT RPN programs I wrote. They made sense to me (and the calculator) at the time. But I now can't read them!
I long ago lost the calculator. But the wallet I got to hold it attached to my belt I now use to hold my DAP.
I do like the idea of ‘Practically Electronics.’
Presumably it was a sister publication of ‘Practical Electronics.’
I had the amp with the sliding controls. It was the first piece of audio kit I owned other than a mono record player with an auto-changer. I cannot remember what speakers I had though.
I didn't ever have any Sinclair audio products other than a Micromatic pocket radio which I built from a kit.Interesting, I didn’t know that TI calculators were RPN. I went down the HP-41 route, which definately were RPN!
The HP died years ago, and these days I use my iPhone Excess..........