Pulse Duration Modulator circuit description
#pulse modulation
#timer
#signal generator
#modulation
#circuit design
#electronics
#pulse width
#duration control
#waveform
#timing circuit
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Jogging Timer
This circuit was developed in response to requests from visitors for a timer that can emit a beep after intervals of one, two, three minutes, and so forth, suitable for jogging purposes. As illustrated in the circuit diagram, SW1 is...
Repeating Timer No5
This circuit is a temperature-controlled version of Repeating Timer No. 3. The light-dependent resistor has been replaced by a temperature-dependent resistor, or thermistor. A small preset potentiometer allows the user to select the temperature threshold above which the timer will...
Three-minute-timer
When S1 is off, C1 charges to within 0.5 V of the battery voltage through diode D1 and resistor R4. When S1 is closed, the anode of the PUT rises to the positive supply voltage. The PUT does not conduct...
APPLIANCE TIMER
This circuit controls intervals of up to 1 hour in 1-second increments, as programmed by thumb wheel switches S1 and S2. It consists of a two-stage programmed counter driven by a 1-second clock derived from the 60-Hz power line. The...
Digital Stop Watch and Digital Timer Circuit
A digital stopwatch or digital timer circuit schematic is constructed using the timer IC LM555 and the 4-digit counter IC MM74C926, which is paired with a multiplexed 7-segment LED display.
The digital stopwatch circuit utilizes the LM555 timer IC configured in...
Head light timer circuit
This circuit is a compact timer that keeps the headlights of a car on for approximately 1.5 minutes before turning them off. Incorporating this circuit into a vehicle allows access to dark areas without the need to return and manually...
tan timer schematics
This timer is intended for individuals seeking to achieve a tan while minimizing excessive exposure to sunlight. A rotary switch adjusts the timer based on six categorized photo-types. A photoresistor modifies the preset time value in relation to sunlight brightness....
Repeating Timer 5
This timer circuit operates only when the temperature exceeds a predetermined level. An alternative version, known as Repeating Timer No. 6, functions while the temperature is below this preset level. The resistor R7 is used to set the temperature threshold....
Timer Circuit
I am looking to build a timer for a pump. I want the pump to run for 5 minutes, then stop.
To create a timer circuit for a pump that operates for a duration of 5 minutes, a simple astable multivibrator...