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Single transistor radio – Circuit Schematic
Single transistor radio
Here is the circuit diagram of a simple radio that uses one transistor and few other passive components. The C6 and L1 forms a tank circuit which picks up the s...
Single chip FM transmitter circuit using IC MAX 2606 – Circuit Schematic
Single chip FM transmitter circuit using IC MAX 2606
A simple Single chip FM transmitter circuit with diagram and schematic using IC MAX 2606, which is a high performance Voltage controlled oscillator or VCO.....
Single Chip FM Radio Circuit with Diagram using TDA 7000 IC – Circuit Schematic
Single Chip FM Radio Circuit with Diagram using TDA 7000 IC
A simple FM Radio circuit with diagram and schematic using IC TDA 7000. This low cost single chip fm radio circuit design is easy to make and is suitable to mak...
Simple Radio Circuit using Op Amp – Circuit Schematic
Simple Radio Circuit using Op Amp
A low cost,simple radio circuit schematic using op amp.This radio circuit diagram consists of a sensitive audio amplifier which receives strong signals.....
Simple AM radio – Circuit Schematic
Simple AM radio
This is a very simple AM radio circuit using only two transistors. The coil L1 and variable capacitor C1 forms the tank circuit. Transistor Q1 does the job of d...
Radio Collar Transmitter Circuit using NE 555 IC – Circuit Schematic
Radio Collar Transmitter Circuit using NE 555 IC
This is a radio transmitter circuit diagram suitable for fitting on radio collars using NE 555 IC. he circuit transmits a pulse in the FM between band 88MHz to ...
QRP antenna tuner circuit – Circuit Schematic
QRP antenna tuner circuit
Low power ( 3 to 30 MHz) transmitters constructed by hams are generally called QRP`s. For such transmitters a well tuned antenna is a must. If the impedance is ...
Phase Locked Loop (PLL) Operating Principle Phase Detector VCO LPF – Circuit Schematic
Phase Locked Loop (PLL) Operating Principle Phase Detector VCO LPF
Phase Locked Loop (PLL) Operating Principle with block diagram showing Phase Detector, Voltage Controlled Oscillator, Low Pass Filter.....
Phase Locked Loop ICs – Circuit Schematic
Phase Locked Loop ICs
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Medium power FM transmitter circuit – Circuit Schematic
Medium power FM transmitter circuit
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Long range AM transmitter – Circuit Schematic
Long range AM transmitter
Here is the circuit diagram of an easy to build long range AM transmitter circuit based on three transistors. With correct tuning and a matching antenna, the tr...
FSK Demodulator – Circuit Schematic
FSK Demodulator
A very useful application of the 565 PLL is as a FSK demodulator. In the 565 PLL the frequency shift is usually accomplished by driving a VCO with the binary da...
FM transmitter using UPC1651 – Circuit Schematic
FM transmitter using UPC1651
Here is the circuit diagram of an FM transmitter using the IC UPC1651. UPC1651 is a wide band UHF Silicon MMIC amplifier. The IC has a broad frequency response ...
FM Radio jammer – Circuit Schematic
FM Radio jammer
Circuit shown here can be used to jam FM radios in its vicinity. The circuit is nothing but a classic single transistor oscillator operating in the VHF region. ...
Field strength meter – Circuit Schematic
Field strength meter
Here is a handy field strength meter that can be used to check the strength of AM radio signals. The circuit is a very useful for those who assemble radio trans...
Direct Coupled Radio Circuit with Diagram – Circuit Schematic
Direct Coupled Radio Circuit with Diagram
A simple direct coupled radio circuit diagram and schematic, ideal for adjacent stations.This circuit uses Q1 as audio amplifier and base emitter capacitance pr...
Band Pass Filters – Circuit Schematic
Band Pass Filters
A band-pass filter is a circuit which is designed to pass signals only in a certain band of frequencies while attenuating all signals outside this band. The par...
AM receiver using ZN414 – Circuit Schematic
AM receiver using ZN414
This is the circuit diagram of the simplest single chip AM radio. The circuit is designed around the IC ZN414Z which is a ten transistor tuned radio frequency r...
MK484 AM receiver circuit – Circuit Schematic
MK484 AM receiver circuit
A very cheap and simple AM receiver circuit using IC MK484. The circuit requires fewexternal components and has a frequency range from 150KHz to 3MHz.....
AM radio circuit based on TDA1572. 9V operation2W output – Circuit Schematic
AM radio circuit based on TDA1572. 9V operation2W output
High quality AM radio circuit based on TDA1572 IC. The AM radio receiver circuit operates from 9V DC and has 1W output power. Requires minimum external componen...