This very simple circuit just uses a couple of resistors, a capacitor and the easily available 555 timer IC.
The 555 is setup as an astable multivibrator operating at a frequency of about 1kHz that produces a shrill noise when switched on. The frequency can be changed by varying the 10K resistor.
If there are any problems please contact [email protected]
Windsor Technologies MPM SK5 4/17818/0-003 4/15970/0-01 Memory Core Pull Card
$1210.03
Doorking 1835-010 Board with Display and Memory Chip Included
$700.00
NEW Allen-Bradley 1784-CF128 Ser A Industrial CompactFlash Card 128MB RevE01
$79.20
New Sealed AB 2080-MEMBAK-RTC Memory Backup Data Log Recipe High Accuracy RTC
$144.63
*Lot of 31* IDT 72T1885L6-7BB SyncFIFO Memory Chip IC - 6ns 128Kx18 - New
$225.00
Micro Memory MM-6120/128 PMC Memory Card
$995.00
Siemens SIMATIC S7, Memory Card 6ES7953-8LP32-0AA0 6ES79538LP320AA0 8MB NEW
$76.32
High Speed TF Micro SD Memory Card 32GB for CCTV Drone Dash Camera
$6.69
Relms Mega Memory 65 PCB Beckman Horizon System MMC Metabolic Measurement Cart
$134.96
HONEYWELL CC-SCMB05 Memory Backup Module 51308657-106 51308658-276 REV:A
$1399.00