Please can someone advise,
First off, I am quite new to making electronic kits, this is the first time I have had need for the use of an encapsulated transformer, however, there are no instructions along with the transformer to indicate which points are supplied with positive or negative AC power, or which outputs are positive and negative which should be connected.
The only identification, on the casing is numbers 1-5 with pin on 1 and 5, (this looks to be imput,) opposite side has numbers 6-10 with pins on 6,7 and 9,10 (this looks to be output).
This transformer is to supply power to telephone amplifier kit (K4900) rather than using a battery.
I have made comparisons to an older transformer, which indicates negative on 1 and positive on 5, other than this I have no other information.
Although it is a very basic question, the answer is needed before I can complete the project.
Thanking you in advance.
Can you supply more info regarding the transformer?
Is this a Velleman transformer? If yes, ordercode?
If no, please check with the manufacturer.
Thank you so much for your speedy response,
I am sorry I should have included these details
As far as I am aware the transformer is from Velleman, as it seemed to be a necessary part in the Velleman kit description.
Here is a copy of description:-Velleman Telephone Amplifier Kit
Specification Features:
Input: isolation transformer interface
Speaker output: 0.5W / 8ohm
Line output: 0dB (0.775Vrms)
Power supply: 7 - 9VAC or 9 - 12VDC / 150mA
Read the fully Illustrated Assembly Manual for K4900
Transformer
300-755
Case
G416 or WCAH2853
The supplier is ESR Electronic Components Ltd, (www.esr.co.uk)
The item code on invoice is 300-755 (Encapsulated Transformer 6VA 0-9, 0-9V (2 x 333mA)
These are the details stamped on the side of the Transformer,
230V
AEC 50-60Hz
6VA T40/E
10269 C E
2090060M
EN60 742
there are the numbers 1-5 and opposite 6-10 embossed on the top face.
there are 6 pins in total on the underside in line with numbers 1,5, on one side, Also in line with 6,7, and 9,10 on opposite side.
I hope this helps
thank you again I look forward to hearing from you.
Mains is supplied between pins 1 and 5
9VAC is available between pins 6-7 or 9-10
(see diagram on product page: http://www.velleman.eu/products/view/?id=940)
Please make sure that your wiring and assembly complies with all applicable safety requirements.
We strongly suggest that you have your assembly checked by a licenced technician before plugging it in!
many thanks for reply,
I appreciate that, I have looked at these illustrations however there is no indication which pin is positive feed and which is Neutral.
May be I am not explaining properly I need to know which pin is to be connected to the LIVE wire of the 240V supply, I.E. pin 1 = (live)Positive brown wire or is pin 5 = (live)Positive Brown Wire.
thank you again .I look forward to hearing from you.
That is of no importance.
thats great, many thanks.
working perfectly, many many thanks for you assistance.
