A solicitação
“Draw a 12 V car alarm circuit with an arming switch, shock sensor switch, transistor, resistor-capacitor timing network, siren and flyback diode.”
Depois, tenteAdd an LED that shows the alarm is armed.Change the siren to a relay output.
O que há neste desenho
Entenda as decisões por trás dele.
01
Use of transistor switch to drive siren
02
RC network for timed siren activation
03
Freewheeling diode for protection
Suitable for basic vehicle security systems, can be adapted with relay for higher current sirens.