Alternating intermittent mockup
Alternating intermittent models, when the 4,5 V battery is connected to the circuit, the two lamps will light up intermittently. Supplied without batteries.
When a 4,5 V voltage source is connected, the lamps switch on and off intermittently and alternately with each other. Suppose the first BC 548/547 transistor is blocked and the other transits. The first electrolytic capacitor is then charged with a voltage of 3,8 V. If the first transistor passes, the voltage at the collector drops to 0,2 V. At that moment, the capacitor is charged and at the base of the second transistor. there is a voltage of 3,1 V, therefore, blocked; this allows the second capacitor to charge up to 3,8 V. Through the 6,3 kOhm resistor, the voltage at the base slowly increases to 0,7 V, which makes the transistor pass, and the cycle repeats itself. again.
|Construction time:||2 h.|