G8MNY > TECH 14.05.22 09:25z 44 Lines 1779 Bytes #29 (0) @ WW
BID : 21624_GB7CIP
Subj: 3 way supplies for radios etc.
Sent: 220514/0913Z @:GB7CIP.#32.GBR.EURO #:21624 [Caterham Surrey GBR]
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 ÚÄ´>ÃÄÄÄÄÄÄ>Lamp timer kill
MAINS )Äo-oÄ¿ ÚÄÄÂÄÁÄÄÄÄÄ´>ÃÄÂÄÄÄÂÄÄÄÄÄÄ> +9-10v
2 PIN )º( À´>ÃÄ¿ ³ ===2m2 TO RADIO's
SOCKET )º(________³______³___³______ ON/OFF
WITH )º( ³ ³ ³ SWITCH
SEPARATE )º( Ú´>ÃÄ´ ³ ³
BREAK )ÄÄÄÄÄÙ ÀÄÄÁÄÄÄÄ)ÄÄ´>ÃÄ´ ³
CONTACT 7-0-7v ³ ³ ³
10ê ³ ³
^ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´ ³ +_³_
insulated ³ ³ _Ü_
inÚÄÄÄÄÄÄ¿out ³ ³ 6x _Ü_
+12V >ÄÄÄ´>ÃÄÄÂÄ´ 7805 ÃÄÂÄÄ´>ÃÄÄÙ ³ D _Ü_
DC POWER ³ ÀÄÄÄÂÄÄÙ ³ ³ type _Ü_
SOCKET ÀÄ´ÃÄÄÅÄ´ÃÄÙu1 ³ _Ü_
WITH EARTH u1 _³_ ³ Ü
BREAK /_\` 5V6 ³ ³
The 2 10ê 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
Read previous mail | Read next mail