NOTE - MINIMUM ORDER QUANTITY FOR THIS PRODUCT IS 40.
BC574 8-Million Gain Circuit Kit
Description:
Fun and Easy to make DIY Circuits For Students And Hobbyist.
This circuit is so sensitive it will detect "mains hum." Simply move it across any wall and it will detect where the mains cable ..
NOTE - MINIMUM ORDER QUANTITY FOR THIS PRODUCT IS 40.
HEE-HAW Siren DIY Kit
Description:
Fun and Easy to make DIY Circuits For Students And Hobbyist.
The HEE-HAW Siren circuit uses two 555's to produce an up-down wailing sound. The first 555 is wired as a low-frequency oscillator to control the ..