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- D1 to D3, diodes from 1N4000 series
- ZD1, 10V Zener-diode
- ZD2, 18V/1.3W Zener-diode
Mount the IC socket for IC1 to IC3
Mount the pins for VS,COM and CS
Mount the coil L1 of 4700uH; this coil looks like a resistance but, as a rule,
possesses a somewhat thicker brown body with the colours yellow, purple, red
and gold.
Mount the capacitors:
- C1, 150pF ceramic (sometimes with annotation 151)
- C2, 33nF MKM
- C3, 68nF MKM
- C4, 100nF ceramic (sometimes with annotation 104)
- C5, 1uF MKM
- C6 and C7, 10uF elco. Pay attention to polarity!
- C8 and C9, 100uF elco. Pay attention to polarity!
- C10, 470uF elco. Pay attention to polarity!
Mount the trimming potentiometers:
RV1, 100 Ohm
RV2, 47K (or 50K)
Mount the screw connectors for J1 to J5; these are telescoped two-pole
connectors.
Mount a three-pole connector for J6.
Mount the transistors:
- T1, type BC557B or equivalent.
- T2, type BC547B or equivalent.
- T3, type BD646: to be installed together with the heat sink on to the board (but
first fold its connection at right angles). Only when the transistor has been fixed
with 10mm bolt and nut, can it be soldered.
Depending on the supplied type, mount relay RY1a or RYc (16A/12V)
Mount for R36, 180 Ohm 1/2W (brown, grey, brown) if RY1a is used, or mount
R36, 100 Ohm 1W (brown, black, brown) if RY1c is used.
Installing the potentiometers: (see figure 1.0)
Install the potentiometers THROUGH the board, in such a way that the axes are
situated on the solder side. Only when the potentiometers have been fixed can
switch-throughs A, B and C with the board be made, by means of small pieces of
blank wire.
- RV3, 4K7 or 5K logarithmical.
H7200-ED2-25
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