Timer Thermostat Circuit
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Temperature Controller For PC PCB
Computers often experience overheating due to prolonged use or high ambient temperatures, making temperature controllers essential. Accurate temperature measurement is necessary to ensure that the computer operates within a safe temperature range. A circuit diagram for a simple temperature controller...
Temperature-Controlled Switch circuit
A switch that is controlled by its ambient temperature operates without human intervention, except during the assembly of the electronic thermostat. This thermally controlled switch has numerous practical applications. For instance, if the internal temperature of a computer rises excessively,...
Long-term electronic timer
The timer consists of an oscillator and a counter integrated into a single circuit. The timing interval is calculated by multiplying the oscillator period by the number of cycles to be counted. The frequency of the oscillator is influenced by...
A bedside lamp delay circuit
The circuit includes a CD4 component with a connection of 16 feet for the Vcc terminal, 8 feet for the ground, 12 feet for the reset terminal, 7 feet for the Qt end, and 3 feet for the Q end....
A muting delay & DC offset protection circuit
A low-pass filter is a stable state-space system that has an input and produces an output. If the input is a quasi-periodic signal, the output will be the same quasi-periodic signal with a phase shift. The key difference is that...
Thermostat with three-wire serial interface smart temperature sensor DS1620 configuration control circuit
The DS1620, in conjunction with a microprocessor, is utilized to monitor temperature. By controlling the fan, the thermal conditions of the chip can be adjusted to establish a temperature control circuit as illustrated in the accompanying figure. The system is...
Temperature Fan Controller
This circuit controls very accurately a fan of any size. Just adjust the associated resistors for a different type like the R6 resistor of 100 ohm, 2 watt type and you're all set. The above circuit diagram is for a...
Temperature Controlled Relays 4001/4011
The first circuit energizes the relay when the temperature rises above the preset level. The second circuit energizes the relay when the temperature falls below the preset level. The two circuits are practically identical. The only difference between them is...
1000 Watt Thermostat controller
Below is a thermostat circuit I recently built to control a 1300 watt space heater. The heater element (not shown) is connected in series with two back to back 16 amp SCRs (not shown) which are controlled with a small...