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G8MNY > TECH 21.02.25 17:28l 45 Lines 1780 Bytes #8 (0) @ WW
BID : 26490_GB7CIP
Read: GUEST
Subj: 3 way supplies for radios etc.
Path: JH4XSY<JE7YGF<LU4ECL<VK2RZ<VE3CGR<VA3BAL<VA3PJB<VE3CLG<GB7CIP
Sent: 250221/0816Z @:GB7CIP.#32.GBR.EURO #:26490 [Caterham Surrey GBR]
From: G8MNY@GB7CIP.#32.GBR.EURO
To : TECH@WW
By G8MNY (New May 05)
(8 Bit ASCII graphics use code page 437 or 850, Terminal Font)
While inside a SONY (ICF6700L) Radio, I rewired it to trickle charge the
batteries from mains (something you can do to all batteries to some extent) &
also change the 9V DC input jack from -ve centre to + ve centre & 12V DC.
I also cut some PCB track & added a 200mA slow blow mains fuse as there was no
fuse or internal thermal breaker in that type of transformer!
Fuse ﾚﾄｴ>ﾃﾄﾄﾄﾄﾄﾄ>Lamp timer kill
MAINS )ﾄo-oﾄｿ ﾚﾄﾄﾂﾄﾁﾄﾄﾄﾄﾄｴ>ﾃﾄﾂﾄﾄﾄﾂﾄﾄﾄﾄﾄﾄ> +9-10v
2 PIN )ｺ( ﾀｴ>ﾃﾄｿ ｳ ===2m2 TO RADIO's
SOCKET )ｺ(________ｳ______ｳ___ｳ______ ON/OFF
WITH )ｺ( ｳ ｳ ｳ SWITCH
SEPARATE )ｺ( ﾚｴ>ﾃﾄｴ ｳ ｳ
BREAK )ﾄﾄﾄﾄﾄﾙ ﾀﾄﾄﾁﾄﾄﾄﾄ)ﾄﾄｴ>ﾃﾄｴ ｳ
CONTACT 7-0-7v ｳ ｳ ｳ
10R ｳ ｳ
vﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾁﾄﾄﾄﾄﾄﾄ)ﾄﾄ)ﾄﾄﾄﾄﾄﾄﾄﾄﾄｿ
^ﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄｴ ｳ +_ｳ_
insulated ｳ ｳ _ﾜ_
inﾚﾄﾄﾄﾄﾄﾄｿout ｳ ｳ 6x _ﾜ_
+12V >ﾄﾄﾄｴ>ﾃﾄﾄﾂﾄｴ 7805 ﾃﾄﾂﾄﾄｴ>ﾃﾄﾄﾙ ｳ D _ﾜ_
DC POWER ｳ ﾀﾄﾄﾄﾂﾄﾄﾙ ｳ ｳ type _ﾜ_
SOCKET ﾀﾄｴﾃﾄﾄﾅﾄｴﾃﾄﾙu1 ｳ _ﾜ_
WITH EARTH u1 _ｳ_ ｳ ﾜ
BREAK /_\` 5V6 ｳ ｳ
0V >ﾄvﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾁﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾁﾄｴ<ﾃﾄ10Rﾄｴ
^ﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾙ
The 2 10R set the charge current. Due to the DC jack -ve switch & the lamp
timer kill complications, it was it was not possible to simplify the circuit.
It is nothing like as straight forward as I had hoped.
Why Don't U send an interesting bul?
73 De John, G8MNY @ GB7CIP
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