Index
Numbers
2G mobile phones
74HC4017 IC outputs
555 monostable circuit, activating
555 timer. See also astable 555 timer; ICs (integrated circuits)
alarm circuit experiment
circuit diagram
diodes
flyback diode
indicator lights experiment
monostable mode
“Off” timing
pin connections
pressure-sensitive mat experiment
speed of output signal
“On” timing
touch-activated alarm experiment
using
using with electronic horn
A
AA battery, voltage of
alarm circuit experiment. See also circuits; touch-activated alarm experiment
555 timer
breadboard layout
circuit diagram
circuit functionality
components
conducting
converting values
equipment
latching alarm
monostable mode
monostable timing table
normally open contacts
output connections
specification
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