This BH pll fm transmitter includes features like: pre-emphasis, sound limiter , stereo transmission, low pass filter, pll circuit, fm oscillator and. BH Datasheet PDF Download – FM Transmitter, BH data sheet. BH Datasheet, BH PDF, BH Data sheet, BH manual, BH pdf, BH, datenblatt, Electronics BH, alldatasheet, free, datasheet.

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It can datasneet connected dataseet any type of stereo audio source such as iPod, Computer, Laptop, CD Player, Walkman, Television, Satellite Receiver, Tape Deck or other stereo system to transmit stereo sound with excellent clarity throughout your home, office, yard or camp ground. If there any further costs bbh during the bh or repair process, we will ask you bh take responsibility for those as well.

The composite output signal at pin 5 is applied to the junction of R6 and R7 though a network comprising of components C4, C5, C6 and R1. Resistor R4 and capacitor C9 connected in series between the collector and base of Q1 provides further filtering.

No this is not possible because pre-emphasis is built into BH chip.

Stereo FM transmitter circuit based on BH IC .

Capacitors C2 and C16 sets the roll-off point of the low pass filter. Stereo Encoder works but the transmitted music comes out distorted. The meter bh a perfect addition to any bh supply, battery chargers bh other electronic projects where voltage and current must be monitored. Can I use my bh pre-emphasis circuit?

Arduino Prototype uses all standard through-hole bh for easy construction, two of which are hidden underneath IC socket. The L1 has to be readjusted for getting 2V between junction of R5, R6 and Ground every time you change the transmission frequency.


It is a very useful bench test equipment for testing and finding out the frequency of various devices with unknown frequency such as oscillators, radio receivers, transmitters, function generators, crystals, etc. As e-readers bh high value products, bh is bh that customers have a certain knowledge about the use of e-raders.

BH Datasheet, PDF – Alldatasheet

So put this in a good looking box and start selling. The circuit includes an auto ranging as well as reset switch and produces very accurate and stable readings. You can control lights, fans, Datashewt system, computer, printer, amplifier, robots, garage door, security systems, motor-driven curtains, motorized window blinds, door locks, sprinklers, motorized projection screens and anything else you can think of.

All warranty requests will be rejected after days from shipment. These pins can be held low by closing the corresponding switches.


Bulk Buy Discounts Order bh or more and enjoy the savings. The good news is that you can find 7.

Capacitors C1 and C17 are used to set the amount of pre-emphasis required and here with the used values it is 50uS. Such a reduction is necessary to make the transmitter legal because in many countries transmitters that has an output power more than few milli watts may change from nation to nation are illegal.

Bhh will send a confirmation code to your mobile phone to verify that your contact details are correct. Resistor R4 improves the response of the transistor to transient changes datasheett capacitor C9 improves low frequency filtering. Stereo FM transmitter admin July 26, 7 Comments. The modulated RF output is available at pin 11 and it bh14117 fed to the antenna through a filter network consisting of components L2, L3, C20, and C Headphone amplifier is small enough to fit in Altoids tin box, and thanks to low power consumption may be supplied from a single 9V battery.


This BH datasneet fm transmitter includes features like: Previous post Next post. By omitting R12, R13, R14 and connecting the antenna directly to the junction daasheet L2 and Datasheeg, the range can be increased, but do it at your own risk. If power supply is being used make sure that all the diodes on the rectifier are bypassed daatsheet a 10n capacitors and that your voltage supply is gh filtered with bh least uF capacitor. At full output power, the circuit consumes only 20mA and has a channel separation of 40dB.

The meter is a perfect addition to any power supply, battery chargers and other electronic projects where voltage and current must be monitored. Total Estimated Delivery Time. There are 14 possible preset transmission frequencies, starting from I am pretty sure hobbyists will agree. Once that is done turn off transmitter and disconnect its audio inputs. Stereo transmitters may require ‘slightly’ stronger power output to achieve clear stereo sound on the receiving part because transmitter has to also carry out 19KHz PILOT signal without which stereo transmission is not possible.

The multimeter should show a reading equal to the supply voltage. The carrier frequency is controlled using the PLL phase lock loop phase detector output pin pin 7 and the components connected around it. Lack of proper filtering on your power supply may be a problem.

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