DYNACO PAT5PWR Assembly Manual - Page 9

Browse online or download pdf Assembly Manual for Amplifier DYNACO PAT5PWR. DYNACO PAT5PWR 18 pages. Replacement power supply rev e hardware

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Assembly Hint

You'll want to get the regulator or transistors leads bent so that when laying down, the

mounting holes line up well. To do this, I put the leads halfway into their mounting holes,

then slowly bend the regulator over into position while aiming the hole in the device for

the hole in the PCB. With a little care, you won't have to jimmy it very much at all to get

good registration.

Next, remove the device with the now pre-bent leads, and:

 Apply a thin film of thermal compound to the back TO-220 device just before

assembling it to the heat-sink and PCB.

 Fasten the regulator in place with the hardware as shown in Figure 4 and Figure 6.

 Make sure to put the correct regulator type or transistor at the indicated location.

 Solder the leads after the heatsink, power device, and mounting hardware are

secured in place. That keeps the power devices as cool as possible.

Desig-

Type

Description, Marking

nation

TL783

High Voltage Positive Regulator, TL783. U1 gets one short

heatsink mounted on the component side of the board.

TL783

High Voltage Positive Regulator, TL783. U2 gets one long

heatsink on the component side of the board, and one short

heatsink on the solder side of the board.

LM7915 Negative 15V Regulator, LM7915. U3 gets one long

heatsink mounted on the component side of the board.

TIP32C

PNP Power Transistor, TIP32C. Q2 gets one long heatsink

mounted on the component side of the board.

Before you solder, please double check that the correct part is in the correct location.

TO-220 Packaged Devices

Page 9 of 18

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