306
Fig. 3.149:
Circuit 149 – Pin assignment of the
RS-232C interface
Fig. 3.150:
Circuit
150: Simple 1kHz
tone generator
Fig. 3.151:
Circuit 151:
Simple 100Hz tone
generator
Circuit 150 to 152 An RC phase shifter chain (C1 to C3, R4 and R5) forms a time-delayed feedback from the
collector to the base. This produces undamped sine waves.
Summary of Contents for ELECTRONICS EXPERIMENTS BOX
Page 4: ......
Page 265: ...267 Fig 3 56 Cir cuit 56 Audio limiter Fig 3 57 Circuit 57 Amplifier for a storm detector...
Page 269: ...271 Fig 3 64 Circuit 64 Stabilizer for 1 9 V Fig 3 65 Circuit 65 Stabilizer for 2 5 V...
Page 275: ...277 Fig 3 80 Circuit 80 Quiztimer 30 seconds Fig 3 81 Circuit 81 Handy diode tester...
Page 315: ...317 Fig 3 179 Circuit 179 HF generator 150 kHz Fig 3 180 Circuit 180 HF generator 420 kHz...
