This TTL siren is formed by two oscillators using each two Gates of a 7400. Frequency or the sounds is given by C2 and in interval between pulses by C1. A power output stage drive a loudspeaker. Circuit must be powered from a 5 V supply.
This TTL siren is formed by two oscillators using each two Gates of a 7400. Frequency or the sounds is given by C2 and in interval between pulses by C1. A power output stage drive a loudspeaker. Circuit must be powered from a 5 V supply.
