i Se Frequency Chonnel Reference 32hc ~~ -+*-—-f { Cnannei 350 kc Bias Osciilotas and Cathode Fallows: 24 Timing laolation Amplifiaw Converter Impedance #7 #7 isolation Amplifier #6 Converter #6 impedance {solation Amplifier #5 Converter #5 K 4138 e6 — Head 8 w7 -+——____—___ e6 #5 o4 #3 #2 el Erase Head = - Head #8 7 #6 a 5 *4 #3 #2 ———— el Playbock Figure 2.8 Biook diagram of magnetic-tape recorder. Erase Amptfiess 8 7 + Isolation Amplifier #4 Impedance #5 Impedance Converters #4 #3 #4 } #2 e) Record ond Reloy K- 309 Head BA Inuaihent, #3 . | Converter #3 . \solotion Amplities impedance Multivibrator WS 4 4 Oelector 4 Channel oo Detector Detector oo. 2 Cnannal Detector o—o—_4 3Channei Adder Channel ——— From Encoder 1 Ovsec x-3¥O Holding Voltage rc Amplifier |-—~z8