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Posts tagged 1500,

Circuit diagram 75 Meter QRP SSB Transceiver

The 75 Meter QRP SSB Transceiver Theory of Operation 6-30-03 In general, the transceiver switches the 4-element 1500 ohm xtal BPF ends between the inputs and outputs of the two SA602s to reverse the signal flow for R/T operation. Since no IF amplifier is used in the design, 20 dB of additional receiver gain is […]

How Placing Power and Ground in PCB design ?

All the components that need to set its location, such as connectors, switches, LED , mounting holes, heat sinks or other items mounted to an external location. Give careful thought when placing components to minimize the long trail. Put the next section are connected to each other. Doing a good job here will make tracks […]

LCD Modules circuit

LCD Modules circuit HD44780 based LCD Modules circuit

Active Crossover and Speaker Matching

Active Crossover and Speaker Matching Circuit Diagram using TL082

Microphone Circuit with tone control

Microphone Circuit with tone control using TL072

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