« Electronic Circuits Homepage

Digital: Frequency Meter

Photo: Temperature Meter LCD Temperature Meter LCD
This temperature meter uses a Harris 7106 IC as the heart of a low cost, accurate temperature meter. LCD 3-1/2 digit readout. All of the active circuits are in this one, versatile chip. In addition to temperature functions, the board includes an area for
Photo: Panel Meter 3 1/2 Digit Panel Meter 3 1/2 Digit
This LCD panel meter is a very flexible design that can be customized to your own VOLT meter or AMP meter needs. It may be customized to measure any voltage range, standard or not. Or you can customize it to measure input from a transducer; full details a
10-LED Audio Volume Level VU Meter
0 Comments - in LED Circuits
Schematic for an electronic audio level VU meter that uses LED's to display the volume/audio levels.
Photo: Ultrasonic Wind Speed Meter Ultrasonic Wind Speed Meter
Using ultrasonic techniques, this solid-state design has no moving parts.
Photo: Logic Probe Logic Probe
An indispensable piece of electronic equipment for testing and measuring digital equipment. This Electronic Kit is normally used for fault finding and testing but can also be a great help in design work and to see how digital equipment works. Switch for u
4 Transistor 500mW FM Transmitter Circuit
0 Comments - in FM Transmitters
Simple 4-transistor transmitter electronic circuit that produces a Frequency Modulated (FM) signal at approximately 100MHz.
Photo: BW-TX1 - 1 Watt Stereo FM Transmitter BW-TX1 - 1 Watt Stereo FM Transmitter
The TX1 from Broadcast Warehouse is an extremely high quality stereo FM transmitter that complies with FCC Standards, meaning that it can be used for commerical broadcasting. Output power is 1 Watt.
Photo: Broadcast Warehouse LCD PLL 1 Watt Exciter (Kit Version) Broadcast Warehouse LCD PLL 1 Watt Exciter (Kit Version)
Kit Version: The LCD PLL 1 Watt FM Transmitter is an extremely nice piece of technology. This exciter features a built-in LCD screen and digital frequency control.
Photo: Broadcast Warehouse LCD PLL 1 Watt Exciter (Assembled Version) Broadcast Warehouse LCD PLL 1 Watt Exciter (Assembled Version)
Assembled Version: The LCD PLL 1 Watt FM Transmitter is an extremely nice piece of technology. This exciter features a built-in LCD screen and digital frequency control.
Photo: Temperature Controller Temperature Controller
This LCD panel meter is a very flexible design that can be customized to your own VOLT meter or AMP meter needs. It may be customized to measure any voltage range, standard or not. Or you can customize it to measure input from a transducer; full details a
Photo: BW-TX150 - 150 Watt Stereo FM Transmitter BW-TX150 - 150 Watt Stereo FM Transmitter
The TX150 from Broadcast Warehouse is an extremely high quality stereo FM transmitter that complies with FCC Standards, meaning that it can be used for commerical broadcasting. Output power is 150 Watts.
Photo: BW-TX300 - 300 Watt Stereo FM Transmitter BW-TX300 - 300 Watt Stereo FM Transmitter
The TX300 from Broadcast Warehouse is an extremely high quality stereo FM transmitter that complies with FCC Standards, meaning that it can be used for commerical broadcasting. Output power is 300 Watts.
Photo: BW-TX50 - 50 Watt Stereo FM Transmitter BW-TX50 - 50 Watt Stereo FM Transmitter
The TX50 from Broadcast Warehouse is an extremely high quality stereo FM transmitter that complies with FCC Standards, meaning that it can be used for commerical broadcasting. Output power is 50 Watts.
Photo: BW-TX25 - 25 Watt Stereo FM Transmitter BW-TX25 - 25 Watt Stereo FM Transmitter
The TX25 from Broadcast Warehouse is an extremely high quality stereo FM transmitter that complies with FCC Standards, meaning that it can be used for commerical broadcasting. Output power is 25 Watts.
Photo: BW-TX5 - 5 Watt Stereo FM Transmitter BW-TX5 - 5 Watt Stereo FM Transmitter
The TX5 from Broadcast Warehouse is an extremely high quality stereo FM transmitter that complies with FCC Standards, meaning that it can be used for commerical broadcasting. Output power is 5 Watts.
Photo: High Quality 9 Volt FM Transmitter Kit High Quality 9 Volt FM Transmitter Kit
The most powerful circuit we've seen that operates on such low voltage (just two AA cells). A range of 100 meters can be expected and, given a good antenna and FM receiver, 500 meters can be expected. An external power supply can be used up to 9 volts. Tr
Photo: FM Transmitter and FM Radio Transmitters, 3 Volt FM Transmitter FM Transmitter and FM Radio Transmitters, 3 Volt FM Transmitter
The most powerful circuit we've seen that operates on such low voltage (just two AA cells). A range of 100 meters can be expected and, given a good antenna and FM receiver, 500 meters can be expected. An external power supply can be used up to 9 volts. Tr
Photo: Digital Roulette Electronic Kit Digital Roulette Electronic Kit
This Digital Roulette Kit is just like the real thing. With a push of a button, the LEDs spin round and round. Where they stop is anybody's guess. Its unique design includes "pop out" chips of different values. Enjoy hours of fun with this game
Photo: LCD PLL Expansion Board LCD PLL Expansion Board
This LCD expansion board upgrades your exisiting BW PLL exciter / transmitter so that it has an LCD readout and easier frequency adjustment.
1 Watt PLL FM Transmitter Circuit by Veronica Kits
1 Comment - in FM Transmitters
The Veronica 1 Watt PLL FM Transmitter is a pretty decent broadcast PLL exciter or transmitter that can be used alone or with an RF power amplifier for high power radio broadcast.
Photo: Fiber Optics Educational Kit Electronic Kits Fiber Optics Educational Kit Electronic Kits
Educational Communications Kit, promotes learning about fiber optics with serious hands-on experience. The communications kit is a digital link that is suitable for use as a data link, high voltage isolation, computer interfaces etc. Included are a matche