8
2.13 Antenna amplifier ......................................................................................59
2.14 Acoustic continuity tester ........................................................................... 61
2.15 High pass ...................................................................................................63
2.16 Electronic potentiometer ........................................................................... 66
2.17
2.18 Two-stage AF amplifier ............................................................................. 69
2.19 Zener diode meter .....................................................................................70
2.20 Variable Zener diode ..................................................................................72
2.21 Acoustic Wellness – ticking clock ................................................................76
2.22 Light sensitive switch .................................................................................78
2.23 Symmetric NF Limiter ................................................................................. 81
2.24 Storm detector ...........................................................................................82
2.25 Active DC-DC converter ...............................................................................83
2.26 Low regulated output voltage .................................................................... 88
2.27 Schmitt-Trigger
........................................................................................... 91
2.28 Turn signal gentle to the eye .......................................................................93
2.29 RIAA equalizer ...........................................................................................95
2.30 Low pass ...................................................................................................97
2.31 Quiztimer
................................................................................................ 103
2.32 Handy diode tester ................................................................................... 106
2.33 E-cap as crystal diode .............................................................................. 108
2.34 Fog horn ...................................................................................................110
2.35 Mosquito repeller ......................................................................................111
2.36 Metronome
............................................................................................... 112
2.37 Constant current sources for LEDs ............................................................. 113
2.38 Fireworks
2.39 Bursts of light ............................................................................................118
2.40 Loud foghorn ........................................................................................... 120
2.41 Chaotic flashing ........................................................................................ 121
2.42 LED driver .................................................................................................123
2.43 Electronic potentiometer ...........................................................................125
2.44 Battery charger ........................................................................................ 126
2.45 Battery discharger .................................................................................... 128
2.46 Whistle buoy ........................................................................................... 130
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...
