RCH
INSTALLATION AND MAINTENANCE MANUAL model TOUCH ME
- 56 -
9.8 POWER SUPPLY CIRCUIT
The input voltage VI 12VDC allows to obtain the voltage VS for Power Supply the printer
unit, VCC +5V voltage for Power Supply the logical unit, VB voltage for Power Supply the
SRAM and the RTC (real time clock). Furthermore, 3.3V voltage is obtained from VCC +5V
voltage by means of a voltage regulator.
The following safety features are installed: a T3.15 A (F1) fuse on the input voltage as
general protection of the Power Supply circuits; in addition, (F2) limits la current in case of
overloading on the pilot driver of the drawer’s electromagnet.