Doepfer MTC64 Output Board (transistor driver board) Manuel d'utilisateur télécharger pdf

MTC64 Driver Board

User's Manual

Electronic basic knowledge is required to install the MTC64 driver board and to connect the

elements driven by the board. When you are not sure if your knowledge is sufficient please

consult an expert. We cannot take back modules that became defective because of wrong

installation or wrong connections. We also cannot take back modules which have been

soldered by the user.

The MTC64 outputs are able to drive only very small loads (max. 3 mA) at a very small output voltage

(about 4.5 V). Therefore an additional driver for each output is necessary as soon as more than 3mA

and/or more than 4.5V are required (refer to the last pages of the MTC64 user's manual). For that

purpose a special MTC64 driver board for 16 outputs each was developed. The driver permit currents

up to 0.5A without additional heat sinks resp. up to 1.5A with additional heat sinks that cool the

transistors, and voltages up to 40V.

The schematics below shows one of the 16 identical transistor drivers. By means of the driver board

for example relays, incandescend lamps, magnets or DC motors can be controlled. Each load (i.e.

relay/lamp/magnet/motor....) is connected between the collector of the corresponding transistor (= one

of the output terminals of the driver board) and the positive terminal of the power supply for the loads.

The power supply has to be suitable for the loads in question. If you want to drive e.g. 16 lamps with

24V and 100mA each you need a power supply with 24V and at least 1.6A (16 x100mA = 1.6A).

The internal +5V of the MTC64 main baord can be used only if the loads can be driven with 5V and

the total current is less than 100mA. Otherwise the internal +5V of the MTC64 cannot be used as

power supply for the loads driven by the MTC64 output board !

In case that inductive loads (e.g. magnets, relays, motors) have to be switched, one of the protecting

diodes (marked with an asterisk in the schematics) is required. The diodes are alternatively, i.e. only

one is necessary. For relays the diodes may already be included with the relay (please refer to the

data sheet of the relay).

If loads above 500mA have to be switched some modifications have to be carried out: the 2k2 base

resistor of the switching transistors has to be reduced to about 270 Ohm .The shift register circuits

CD4094 at the main MTC64 board have to replaced by 74HC4094 as these are able to deliver a

higher current. From about 2005 all MTC64 basic boards will be equipped with 74HC4094.

1 2 3 4

MTC64 Driver Board 1
Musikelektronik 4

Résumé du contenu

Page 1 - MTC64 Driver Board

Page 2

The sketch on the next page shows the wiring of the MTC64 driver board and the loads (relays,magnets, motors or similar) to be controlled by the MTC64

Page 3

Page 4 - Musikelektronik

Commentaires sur ces manuels

Pas de commentaire

Doepfer MTC64 Output Board (transistor driver board) Manuel d'utilisateur

Naviguer en ligne ou télécharger Manuel d'utilisateur pour Audio Doepfer MTC64 Output Board (transistor driver board). Doepfer MTC64 Output Board (transistor driver board) User Manual Manuel d'utilisatio

Résumé du contenu

Commentaires sur ces manuels

Produits connexes et manuels pour Audio Doepfer MTC64 Output Board (transistor driver board)