Vectronics VEC-1290K Manual - page 12
VEC-I290K Instruction Manual
AM Radio Transmitter
Phase 4: Molded choke installation
Important Note: only the first three color bands are specified in the following
directions. The fourth band is for tolerance and may be disregarded.
1. Locate the 1000-uH molded choke (brown-black-red). Install and
solder at location L1.
2. Locate the 22-uH molded choke (red-red-black). Install and solder at
location L2.
3. Locate the 680-uH molded choke (blue-gray-brown). Install and solder
at location L3.
4. Locate the two 330-uH (orange-orange-brown) molded chokes. Install
and solder at locations:
5. L4 330 uH (orange-orange-brown).
6. L9 330 uH (orange-orange-brown).
7. Locate the two 180-uH (brown-gray-brown) molded chokes. Install and
solder at the following locations:
8. L5
180 uH (brown-gray-brown).
9. L6
180 uH (brown-gray-brown).
and solder at the following
11. L7
100 uH (brown-black-brown).
12. L8
100 uH (brown-black-brown).
rnase 5: IC Sockets/ICs
1. Locate the 8-pin DIP IC socket. Note that the socket is "keyed", and
should be installed with its key aligned to the silk-screened outline
on the PC board.
1 2 3 4 Pin
Numbers
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