Tan Timer by IC 4060 and IC 4017
Six timing positions suited to different skin types
Timing affected by sunlight intensity
Six timing positions suited to different skin types Timing affected by sunlight intensity. This timer was designed for people wanting to get tanned but at the same time wishing to avoid an excessive exposure to sunlight. A Rotary Switch sets the timer according to six classified Photo-types (see table). A Photo resistor extends the preset time value according to sunlight brightness (see table). When preset time ends, the beeper emits an intermittent signal and, to stop it, a complete switch-off of the circuit via SW2 is necessary.
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Categories: Audio diagram, Lighting, Timer Tags: Clock timer, IC 4060, Light timer, timer alarm
Basic Timer using FET 2N3819
This circuit be Basic Timer Circuit by use important equipment is FET 2N3819. By this circuit can can delay long ago arrive at 1.5 minute. Stand S1 at a position Reset an electric bell will loud. Totter S1 come back at time an electric bell will silent until time drag will stop electric bell talk at one time again. If friends enhance the value C1 or R1 for delay long ago go up. devalue R2 while stay in a position Reset for Reset fast go up. Request friends have fun Basic Timer Circuit , please sir.
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Categories: Timer Tags: 2N3819, timer alarm, timer clocks, Timer Switches
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