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Components and Circuits For discussions about component types, alternatives and availability, circuit configurations and modifications etc. Discussions here should be of a general nature and not about specific sets. |
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27th Nov 2017, 12:37 am | #1 |
Nonode
Join Date: Jul 2005
Location: Hull, East Yorkshire, UK.
Posts: 2,083
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Ever Ready PP5
Has an original example of one of these ever surfaced?
I have a little 'Inscol' TR661 radio (also marketed as 'Harlie'). The battery terminals are not on a piece of paxolin. They are just soldered onto the wires, that's it. It made me wonder if this radio could have used this strange battery. |
27th Nov 2017, 10:07 am | #2 |
Dekatron
Join Date: Jun 2013
Location: East Sussex, UK.
Posts: 3,315
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Re: Ever Ready PP5
There was an earlier thread which gives some details. https://www.vintage-radio.net/forum/...d.php?p=639512
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27th Nov 2017, 10:22 am | #3 |
Dekatron
Join Date: Oct 2003
Location: Croydon, Surrey, UK.
Posts: 7,548
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Re: Ever Ready PP5
The PP5 was an odd beast. I think the Sinclair Micro FM used it....that was my only experience of it. I have no idea what it was originally designed for. It has the same size connections as for the PP3 but one at each end. You could probably fabricate one using suitable button cells, either 7 or 8 stacked in series would probably work. Even back in the late 60's they were difficult to find and most stock left was out of date.
I can't even find an image of one anywhere.
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27th Nov 2017, 5:16 pm | #4 |
Dekatron
Join Date: Jan 2012
Location: Brentwood, Essex, UK.
Posts: 5,316
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Re: Ever Ready PP5
This old thread
https://www.vintage-radio.net/forum/...ad.php?t=49180 describes the construction of a PP4 substitute that might be useful: the PP4 was similar to the PP5. |
27th Nov 2017, 8:09 pm | #5 |
Nonode
Join Date: Jul 2005
Location: Hull, East Yorkshire, UK.
Posts: 2,083
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Re: Ever Ready PP5
That little Inscol radio did not use a PP5. The types listed inside the radio were all for US makers & were the PP3 type
As Ever Ready is no longer in the same hands as it was, where would you get the technical specs of the battery types? Physical dimensions and the current capacity in mAh. |
27th Nov 2017, 9:07 pm | #6 |
Dekatron
Join Date: Jun 2005
Location: Warnham, West Sussex. 10 miles south of DORKING.
Posts: 9,145
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Re: Ever Ready PP5
The PP5 was the size of an AAA [U16] It was used as far as I can remember during the 1961/2 period only in very small pocket transistor radios. I have an AERO that uses one but unfortunately don't have a dud one. They had a VERY short life. 9v with connections at each end similar to PP3 as mentioned. They cost 2/6d in 1962.
The PP4 was the size of a C cell with larger PP9 connectors at each end. The very early versions were rectangular.John. |
27th Nov 2017, 10:16 pm | #7 |
Dekatron
Join Date: Nov 2003
Location: Fakenham, Norfolk, UK.
Posts: 4,245
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Re: Ever Ready PP5
Home Radio catalogue info gives the PP5's dimensions as 5/8" x 19/32" x 1 7/8" - I expect that refers to the earlier form of the battery, later examples being cylindrical.
Below is an ad from the 1962 Radio Show catalogue, showing Ever Ready's full Power Pack range: PP5 at bottom left. Paul Last edited by Paul_RK; 27th Nov 2017 at 10:24 pm. |
27th Nov 2017, 11:15 pm | #8 |
Pentode
Join Date: Aug 2005
Location: Shrewsbury, Shropshire, UK.
Posts: 149
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Re: Ever Ready PP5
It did indeed and they were extremely hard to find. The Micro FM only worked for an hour or so before going into squegging and motorboating when the battery started to fade. Wretched thing!
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27th Nov 2017, 11:31 pm | #9 | |
Dekatron
Join Date: Oct 2003
Location: Croydon, Surrey, UK.
Posts: 7,548
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Re: Ever Ready PP5
Quote:
I seem to recall it was rectangular but with rounded corners, plastic case. I don't remember seeing a round one at all.
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There are lots of brilliant keyboard players and then there is Rick Wakeman..... |
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28th Nov 2017, 7:11 am | #10 |
Banned
Join Date: Dec 2013
Location: Middlewich, Cheshire, UK. & Winter in the Philippines.
Posts: 3,897
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Re: Ever Ready PP5
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28th Nov 2017, 8:55 am | #11 |
Nonode
Join Date: Jul 2005
Location: Hull, East Yorkshire, UK.
Posts: 2,083
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Re: Ever Ready PP5
I assume that the midget AM radios were around in other markets before the UK and Ever Ready made a battery to suit them. Does anyone know what current that the Sinclair Micro FM radio drew?
The PP5 looks like a PP3 that has been chopped in half vertically, with a capacity that is less than half. I another thread on a PP5 battery replacement the dimensions of the PP5 were given and it is a half PP3. What rating was a sixties zinc-carbon PP3 anyway? The Aero 6 radio a member has was said to draw 15mA at normal volume on a broadcast. |