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G8MNY > TECH 14.02.26 00:18l 55 Lines 2400 Bytes #3 (0) @ WW
BID : 52038_GB7CIP
Read: GUEST
Subj: Soldering Iron Economiser/Boost
Path: JH4XSY<N3HYM<VE3CGR<CX2SA<GB7CIP
Sent: 260213/1516Z @:GB7CIP.#32.GBR.EURO #:52038 [Caterham Surrey GBR]
From: G8MNY@GB7CIP.#32.GBR.EURO
To : TECH@WW
By G8MNY (Updated Dec 04)
(8 Bit ASCII graphics use code page 437 or 850, Terminal Font)
Suitable for 15-60W mains irons only!
............S T A N D.................... ....I R O N.........
Fuse ﾚﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾂ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ｿ
L o-oﾄﾄ(ﾄﾄﾄﾄﾂﾄﾄﾄﾄﾄﾄｿ +ｳ 10uF 3 core Boost ｳ
1A ｳ _ｳ_ _ｳ_ === 350V cable Press SOLDERING
ｳ \_/ /_\ ﾀﾄﾄﾄﾄﾄﾄﾄ22Rﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄ> \ IRON
ｳ ｳ ｳ 1W ｳ ELEMENT
ﾀﾄﾄﾄﾄｴ ﾀﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾂﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾁﾄﾄﾄﾄﾄﾄﾄﾙ
ｳ Economize o ｳ or 4 core
4x ｳ ﾚﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄo <ﾄﾄﾙ with earth
1N4006_ｳ_ _ｳ_ Normal Gravity
/_\ \_/ Switch
N ﾄﾄﾄﾄﾄﾄﾄﾄﾄﾄﾁﾄﾄﾄﾄﾄﾄﾙ
E -------------------------------------------------------------------
When on the stand the mains fed to the iron is half wave only for economiser
mode (1/2 power), the iron rest on a suitably mounted stand micro switch that
is connected to one of the bridge diodes. When the iron is picked up, full wave
is restored for (normal power).
An added non locking press button switch mounted in the iron handle, this
boosts the power by connecting a 350V 10uF with a 22R in series (47uF/10R for
60W) housed in the stand (iron not earthed 3 core cable! Or use 4 core rubber
flex with an earth) resulting in approx 300V peak DC from the mains being used
for high power. This is approx 2x the normal power, hence the non locking press
switch!
Make sure all mains connections & switches are safe (properly shrouded heat-
shrink) to avoid shocks etc.
A neon (with series 220k) across iron can be used to indicate the power status.
_._+340V _._ _._ _._ _..__ _..__
/ \ / \ / \ / \ / ' '
0V.ｳ.....ｳ.......ｳ 0V.ｳ.....ｳ______ｳ 0V.ｳ.....ｳｳ.....ｳ 0V...............
ｳ ｳ ｳ
NORMAL \_ _/ ECONOMY FULL POWER BOOST POWER
MAINS ' -340 ｫ POWER RAW DC SMOOTHED DC
Also see my Tech Bul on "Thermostatic Soldering Iron LED".
Why Don't U send an interesting bul?
73 De John, G8MNY @ GB7CIP
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