DYNACO PAT5PWR Manual de montaje - Página 10

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DYNACO PAT5PWR Manual de montaje
It's good practice to keep the bottom heatsink straight so that it doesn't touch the near-by
trace. It's actually not a problem if it does touch it, since the two nets are connected
Figure 7).

Figure 7-Line up the bottom heatsink to not touch the nearby trace

Install the Small Non-polar Capacitors

Designation Description
C1
0.01 µF, 400 Volt film capacitor, box capacitor
C8
0.01 µF, 400 Volt film capacitor, box capacitor

Install Shunt Regulator and Small Transistor

Be very careful. The shunt regulator and small transistor come in the same type of
package, known as a TO-92. They sit right next to each other on the PCB. However,
their functions are very different. Make sure to read the writing on the packages to get
the right device in the right place.
Designation Value
U4
TL431
Q1
2N5401 High Voltage PNP transistor, TO-92 package, look

Install the Electrolytic (polarized) Capacitors

Polarized Capacitors (watch polarity and voltage rating)
Designation Value
C2
100 µF
C9
100 µF
C4
10 µF
C3
470 µF
C5
470 µF
C6
470 µF
Orientation of these caps does not matter.
Shunt Regulator and Small Transistor
Description, Marking
Programmable Shunt Regulator, TO-92 package,
look for "431" on the package.
for "5401" on the package
Rating, Marking
Electrolytic capacitor, 100 µF 63 V, radial leads
Electrolytic capacitor, 100 µF 63 V, radial leads
Electrolytic capacitor, 10 µF 63 V, radial leads
Electrolytic capacitor, 470 µF 63 V, radial leads
Electrolytic capacitor, 470 µF 63 V, radial leads
Electrolytic capacitor, 470 µF 100 V, radial leads
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