DiscoverCircuits.com, has 28,000+ electronic
circuits, cross-referenced
into 500+ categories. We have searched the web to help you
find quick design ideas.
We make every effort to link to material posted by the designer.
Please let us if you would like us to link to your design.
Links to electronic circuits, electronic schematics, designs for engineers,
hobbyists, students & inventors:
LA1800 FM Radio - 3V superheterodyne FM receiver (circuit added
08/07/06)
Lightening Detector - A VLF receiver tuned to 300 kHz designed to detect the
crackle of approaching lightning. A bright lamp flashes in synchrony with the
lightning bolts indicating the proximity and intensity of the storm. It has a
superior RF section with a single resonance near 300kHz and plenty of
sensitivity. The antenna is a telescopic antenna that extends to two or three
feet.... (added 10/04)
One-Transistor Amplifier/Detector - An amplifier may be added to boost the audio
level as shown below. The current consumption of this amplifier is quite low and a
power switch is not included. Disconnect the battery when the receiver is stored for
long periods….(added 04/05/06)
