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Schematic diagram for a broadband QRP SWR metering circuit and SSB TRANSCEIVER 80M / 40M boster filter IF Radio

A schematic diagram for a broadband QRP SWR metering circuit for use in a QRP antenna tuner. One could simply hold a momentary DPDT switch down and watch the LED while tuning the capacitors of the antenna tuner for minimum or zero light.

Does Explorer 16 Starter Kit?

Does Explorer 16 Starter Kit? The Explorer 16 Starter Kit is a complete set of tools for application development using Microchip’s PIC24F, PIC24H, and dsPIC33 16-bit microcontrollers. The kit includes a MPLAB® ICD 2 In Circuit Debugger, an Explorer 16 Development Board, a 9V universal power supply that can be used for either the Explorer […]

Make suplay power circuit diagram for the best guitar

Make suplay power circuit diagram for the best guitar The power supply is again nice and simple, and does not even use traditional regulators for the preamp. The power transformer should be a toroidal for best performance, but a convention tranny will do just fine if you cannot get the toroidal. Do not use a […]

How to Make Electronic Circuits to drive the rats, mosquitoes and other animals

This circuit functions with inaudible (ultrasonic) sound. Frequency to 20 kHz sound was heard by humans. The sound frequencies above 20 kHz is called ultrasonic sound. Described a series of produce (emit) ultrasonic sound frequencies between 40 and 50 kHz. Like the remote control system is also cirucit consists of a mini transmitter and receiver […]

MAX2264/MAX2265/MAX2266 power amplifiers are designed for operation in IS-98-based CDMA

The MAX2264/MAX2265/MAX2266 power amplifiers are designed for operation in IS-98-based CDMA, IS-136-based TDMA, and PDC cellular telephones operating in the 900MHz range. When matched for CDMA operation and biased with margin over the adjacent and alternate channel specification (-45dBc/-56dBc), the amplifiers achieve 28dBm output power with 37% efficiency (MAX2265). At +16dBm output-a very common power […]

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