biomedical interface - bio signals for the microcomputer

biomedical interface ECG, EMG and EEG are common expressions for "bioelectronics", but it will probably be "mumbo jumbo" A2 0oo RI2 C5 mim 772 On Al ... A4 = IC1 = TL 084 4.5 v 4.5 V bio signals for the microcomputer for the "normal" electronics enthusi- asts. Some explanation will therefore be necessary in order to understand what these abbreviations stand for: R11 R12 C7 mim 1MM 2p 2 4.5 V 82571 C11 :10P 10,/ 10n 2a Qt9 E.0003 1.3 (PVI). Transistor T3, on the main board of the games computer is then not required. The sound generator requires a voltage of 12 V. The computer itself cannot supply this. However, if the main computer power supply transformer has a 12 V tap, then a simple supply can be constructed using a diode and a 7812 regulator, as shown in figure 2. The unit consumes approximately 15 mA from the +5 V supply, whereas the +12 V supply must be capable of delivering about 150 mA, with the volume control fully up. A change-over switch can be incorpor- ated, to allow...