Low voltage warning beeper circuit with CA3160
#CA3160
#low voltage
#warning beeper
#alarm circuit
#voltage monitor
#battery protection
#alert system
#safety circuit
No description available.
Low voltage detector
The values of R1, R2, and D1 are selected based on the voltage applied. Using a 12-volt battery, R1 is set to 10 kΩ, R2 to 5 kΩ, and D1 is a 5-volt zener diode or a string of forward-biased...
5 Zone Alarm Circuit
Each zone uses a normally closed contact. These can be micro switches or standard alarm contacts (usually reed switches). Zone 1 is a timed zone which must be used as the entry and exit point of the building. Zones 2...
Induction high pressure alarm circuit
It utilizes the KD153 type "ding-dong" music integrated circuit (IC) to produce a "ding-dong" sound alarm. The reference number is 221611, and it is related to a refrigerator door alarm circuit.
The KD153 integrated circuit is designed specifically for generating melodic...
Versatile Micropower Battery Protector
In May 2002, Silicon Chip introduced the "Battery Guardian," a project aimed at safeguarding 12V car batteries from over-discharge. This unit has gained significant popularity and remains available from kit suppliers. The new design does not replace the Battery Guardian...
House Alarm Loop
This circuit features open and closed loop contacts (switches 1, 2, 3) that activate the alarm, which remains activated for 5 to 10 minutes. The triggering delay for entrance and exit is set to 27 seconds. Additionally, this simple alarm...
Voltage-monitor
When the battery voltage exceeds approximately 11 V, current flows through resistors R1, D1, and R2. The voltage generated due to the current flowing through R2 is sufficient to turn on transistor Q1, effectively bringing its collector voltage near ground...
Battery over-discharge protection circuit diagram
Battery discharge leads to plate acidification, negatively impacting the battery's lifespan. To address this issue, a specialized micro-power battery over-discharge protection circuit has been designed. The circuit features a very low detection current (1.1 mA). Once the protection circuit is...
Micropower double ended limit detector
The detector utilizes three sections of an L144 and a DC4011 type CMOS NAND gate to create a very low power voltage monitor. If the input voltage, Vin, is above Vhigh or below Vlow, the output will be a logical...
Voltage Monitor Circuit
The adjustable voltage monitor can be used to check whether the voltage in a circuit remains within a given range. If the DC voltage is less than the voltage at pin 5 of U1-B, then LED1 will light. If the...