264
Fig. 3.50:
Circuit 50:
Discreet 4.4V Zener
diode
Fig. 3.51:
Circuit 51: Relax-
ing pendulum clock
Circuits 51 and 52: The collector of T1 delivers a feedback to the base of T1 via C1. If T1 is conductive, also T2
is switched through. But the time delay causes C1 to block T1. Likewise T2 is then blocked. Via C1 transistor
T1 becomes electrically conductive again after a time delay. And so it continues.
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...
