Greetings,

I'm helping a family 'in need' repair a gas range, and it uses an
electronic ignition module (schematic copied below). It is no longer
available, and the transformer secondary is open. The neon light
flashes, so assuming electronics are fine, but I haven't probed for
other problems, so at a minimum, I need to replace T1. Does anyone have
any practical, simple, and cheap suggestions for a one-off HV
transformer? Size is important (1 inch sq is original size, but I can
make a little more room).

If winding one is easy enough, with readily available components, that
would be fine, just need some experienced pointers. Would prefer
scrounging from another application where I can just replace with a
similar transformer, or wire it externally, so whomever plays with these
kinds of igniters in their hobby might know where they can be found.
This is 120v AC in.

TIA -Skip




         C1                A       D1                     T1 o
    H o----||----------------+-------|>|-------+-------+       +-----o HVP+
         .1 uF     D2 1N4007 |     1N4007      |       |  o ||(
         250 V   +----|>|----+                 |       +--+ ||(
                 |           |                 |           )||(
                 +---/\/\----+                 |       #20 )||( 1:35
                 |  R1 1M    |             C2 _|_          )||(
                 |        R2 /           1 uF ---      +--+ ||(
                 |       18M \    DL1   400 V  |     __|__  ||(
                 |           /    NE-2         |     _\_/_     +-----o HVP-
                 |           |    +--+         |     / |
                 |           +----|oo|----+---------'  | SCR1
                 |       C3  |    +--+    |    |       | S316A
                 |  .047 uF _|_        R3 /    |       | 400 V
                 |    250 V ---       180 \    |       | 1 A
                 |           |            /    |       |
         R4 2.7K |           |            |    |       |
    N o---/\/\---+-----------+------------+----+-------+
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