Hade tänkt pröva ett lite svårare projekt mot vad jag är van vid och har fastnat vid en Jacobs ladder: http://www.tonyvanroon.com/oldwebsite/c ... acobs.html
Allt ser ganska straight forward ut men är helt nollstäld när det gäller de 2 transformatorerna T1 och T2.
Både T1 och T2 kärnorna och insatserna görs inte längre så jag måste hitta nåt liknande på farnell men jag kan ingenting om induktans för att välja rätt kärna med passande insats. Plus att linda transformatorer har jag aldrig gjort innan, men om man inte testar så lär man sig inget tänker jag, eller ser det för knepigt ut?
T1 = Driver transformer, 30 turns primary, 60 turns secondary (see text)
T2 = Output transformer, half bridge, 32 turns pri., 2500 turns sec. (see text)
I texten nedan visa hur man ska linda en 6 pins insats till T1.
T2 ska vara en "7 segment" insats.
Är det något på farnell som kan tänkas passa?
Winding the Transformers:
Figure 5 is a "footprint" diagram of drive transformer T1 with callouts that can be related to those found on the schematic Fig. 1. The cores and bobbins for this transformer are from Philips (Ferroxcube) Components, Saugerties, NY). The cores are No. E187 made from 3E2A molded ferrite material. The plastic molded bobbins are Part No. E187PCB1-8. These parts are available from the source given in the Parts List.
Transformer T1: Wind the first 30 turns trifilar (three wires in parallel) from No. 30 AWG magnet wire and the remaining 30 turns as single wire turns. Solder the ends of the windings to the pins, insert the E-core, and tape the assembly together securely.
Transformer T2: The core of transformer is No. 4162S from Samhwa USA, Chatsworth CA, with matching seven segment bobbin, cup and primary bobbin. These parts are also available from the source given in the Parts List.
Start winding the secondary bobbin by securing the magnet wire to a pin insulated on the bobbin end and wind between 300 and 400 turns of No. 37 AWG magnet wire on each of seven segments. Snap the cup in place and solder the output leads. Fill the cup with epoxy or RTV Silicone when you are satisfied that the transformer has been wound correctly.
Wind eight turns of No. 30 twisted wires on the primary bobbin and tape the windings in place. Form the air gap of the primary section with 0.005-inch thick Mylar tape and form the air gap for the secondary section with 0.010-inch thick Mylar tape. Tape of clamp the two sections together with a heavy rubber band.
Tips mottages gärna!
): nånstans här: 
