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Weekly Roundup – Top Links for the 2nd Week of November 2017

This week's weekly roundup has a great overview of the ecosystems around microcontrollers that are below $1. Also included are items from NXP, ST Microelectronics, a fantastic new PCIe SDR, and lastly news about this year's Hackaday Prize winner.
vox-circuit-schematic

VOX Circuit

Received by Email - 05/21/2008

VOX is a switch ordered by voice, often used at microphones instead of the classic switch button. The [...]

NS741 Stereo FM Transmitter Circuit

P. Marian - 05/19/2008

NS741 is an integrated circuit, a small power fm transmitter were left and right audio signals can be [...]
stun gun circuit schematic

DIY Stun Gun Circuit

P. Marian - 05/11/2008

This is a diy simple stun gun circuit showned only for learning! In No Way Do I Recommend [...]

BLY94 50W RF Amplifier Circuit

P. Marian -

This fm rf power amplifier circuit is built with BLY94 transistor which delivers up to 50W at 175MHz [...]
stereo encoder circuit schematic

Stereo Encoder Circuit

P. Marian - 05/10/2008

This simple stereo encoder circuit schematic is build with 2 IC MMC4066E and MMC4047 and one transistor BC547B. On IC1 2 and 3 pins is the audio output which is amplified by T1 (current amplification). [...]
tv transmitter circuit

Small TV Transmitter Circuit

P. Marian - 05/06/2008

This small video transmitter is very usefull for video surveillance on short distances ( up to 100m ) [...]

TLC272 Datasheet

P. Marian - 05/04/2008

The TLC272 and TLC277 precision dual operational amplifiers combine a wide range of input offset voltage grades with [...]
class a preamplifier circuit schematic

Class A Preamplifier Circuit

Received by Email -

This class A preamplifier has been designed in a symmetrical structure. In the input differential stages we've used [...]

2N3055 50W Audio Amplifier

P. Marian - 05/03/2008

A very simple audio power amplifier circuit built with 741, 2N3053, 2N4037, 2N3055 and MJ2955 which deliver up [...]
tda1022 reverberator circuit

TDA1022 Audio Reverberator Circuit

Received by Email -

The first reverberator present here is based on TDA1022, the most used BBD. Reverberator adjustements for proper functionality Before we connect the power supply, extract IC2 and IC3 from its base and adjust the potentiometers [...]

NE/SA575 Datasheet Specifications

P. Marian - 05/02/2008

The NE/SA575 is a precision dual gain control circuit designed for low voltage applications. The NE/SA575's channel 1 [...]

BLY94 Datasheet Specs

P. Marian - 05/01/2008

BLY94 is a RF Power transistor in a SOT-55 case which operate in class-B with a Vce of [...]
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