Results tagged #7555 Timer in Circuits
Periodic Timer Timing
This timer circuit is similar to the 5 to 30 minute timer except that when switch S1 is closed, the on/off action of the circuit will contin...
Dummy Alarm Project
The 7555 timer IC used is a low power version of the standard 555 timer. A ‘superbright red LED is used because this provides a bright...
7555 Light-sensitive Alarm
the function of this circuit for detects a sudden shadow falling on the light-sensor and sounds the bleeper when this happens. The light sen...
periodic timer
This timer circuit is similar to the 5 to 30 minute timer except that when switch S1 is closed, the on/off actionof the circuit will continu...
CM2 Practical
The square wave is generated by a 7555 timer operating with a supply of 10V and thus generating exactly this voltage as output voltage. With...
August 2009
This device was designed on request and allows sequential operation of four Leds either to left or right direction, obtained by means of a 7...
Dummy Alarm Project
This Dummy Alarm project makes an LED flash briefly once every 5 seconds to imitate the indicator light of a real alarm. The circuit is desi...