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.
Popcorn direct conversion receiver - schematic for a no-frills, relatively
low-cost CW superhet receiver with a 4.00 MHz Intermediate frequency. There is
no AGC or RF gain control, however this receiver has good large signal
handling capability. This receiver uses just 6 bipolar transistors and an op
amp for reasonable volume into headphones. Much ....(design added 05/08)
R/C Switch - This circuit is a so-called "Radio controlled Electronic Switch". It
can be used to switch on/off anything electrical, whatever it is. Here are a couple of
examples: navigation lights, landing gear, sound systems, Glowplug driver, bomb
release, parachute, search lights, gyros, and so on. This circuits connects to a RC
car controller servo output. (added 5/02)
