speedcnt
No description available.
Headlights Timer
This device is a simple timer that allows the headlights of a vehicle to remain on for approximately 1 minute and 30 seconds. This feature is useful when accessing dark areas without the need to return to turn off the...
0-99 counter by IC 4017G—2
When designing a counter circuit that counts from 0 to 99, an effective approach is to utilize the IC LM4017, which is a decade counter.
The LM4017 is a CMOS decade counter capable of counting from 0 to 9, and it...
The switch shut off time delay circuit diagram
The switch shut-off time delay circuit consists of a timer, optocouplers, a bridge SCR, and an SCR AC switch. When the control button is released, it allows the motor or other AC power to remain active for one hour. Upon...
Counters and Timer Circuits
AN79 Linear Technology AN79 modifies methods presented in AN74, allowing for the verification of 30 nanosecond amplifier settling times with 0.1% resolution. The sampling-based technique used is detailed, and results are presented. Appendices cover oscilloscope overdrive issues, the construction of...
Automatic plant waterer
The unit consists of a sensor, timer, and electric water pump. The sensor is embedded in the soil, and when dry, the electronics operate the water pump for a preset time. The circuit is composed of a level-sensitive Schmitt trigger,...
Timer circuit
The timer circuit is utilized in various projects and is primarily categorized into two types. The first type is an analog RC circuit, where the charging of the capacitor determines the timing of the circuit. This type has a larger...
A Bedside Lamp Timer Circuit Schematic
The purpose of this circuit is to power a lamp or other appliance for a specified duration (30 minutes in this case) and then automatically turn it off. This feature is particularly useful for reading in bed at night, as...
long delay timer schematics
This timer is designed to automatically switch off a portable radio after a set period, allowing users to relax without worrying about battery drain. Resistor R1 and capacitor C1 create a long time constant. When switch P2 is momentarily closed,...
Oscillator circuits
For successful circuit-building exercises, follow these steps: Measure and record all component values before constructing the circuit, selecting resistor values that are sufficiently high to minimize the risk of damaging any active components. In case of significant errors (greater than...