Automatic distress alarm kit control circuit


Posted on Nov 10, 2015

Circuit works: When the patient usually upright, packed in kit SQ mercury switch was turned off,


Automatic distress alarm kit control circuit
Click here to download the full size of the above Circuit.

the alarm circuit power does not work. Once the patient down, SQ automatically connected to the power supply circuit, GB by RT, charges C, after a few seconds about the charging voltage across C up to about 1.3 V, VD and VT. Successively by the cutoff turned ON, lC by 7 feet to get low-level trigger signal work, the output of the pulse output of 6 feet three frequency conversion signal, the VT2 power amplifier, the drive B issue a pleasant change tone alarm .




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

LCD Caller ID with AT89C2051
Power supply monitor
Low voltage regulators
Window-detector
16 G— 2 LCD Volt Meter & Ampere Meter With PIC Schematic Diagram
Circuit Compact DJ Station
How to properly snub transient spikes from a transformer and prevent switch mode power supply burn out
an132
PLL Synthesizer for 150 MHz Local Oscillator
Homemade tablet CarPC



Top