287
Fig. 3.106:
Circuit
106 – Whistle buoy
Fig. 3.107:
Circuit 107 – Constant current source 1.2 mA
Fig. 3.108:
Circuit 108 – Constant current source 2 mA
Circuit 107 to 109 The flat output characteristics of the emitter-to-ground circuit ensure that the current flow-
ing through R3 (or R4 or R5) is independent of this resistor value (within certain limits).
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...
