Jap's electronic projects

Superregenerative receiver

description

This is a simple RF receiver mainly for low-distance digital radio receiver application. The analog output of this circuit should be connected to a schmitt-trigger signal conditioning circuit with a proper value capacitor (from collector of T3). L1 for 27Mhz is about 10 turns, 6 mm diameter coil body.

Schematic diagram

Board Layout

I'm having difficulties with PS files

Printed circuit board

components

posted by pop on 2001-10-19 19:48

hello, I want to make remote thermometer by using temperature sensor.I need your help.can u suggest me circuits which can be used to transmit 0KHZ to 20kHz signal and recieve the very transmitted signal? i hope u will respond me soon. THANK YOU

posted by siat on 2001-10-18 05:59

Can u send me the citcuit of 27MHz AM tranceiver? I am currently doing this project.

posted by shashi kant on 2001-10-13 12:59

hai, i am shashi kant pursuing engineering in elecctronics.I need your help.can u suggest me circuits which can be used to transmit any signal and recieve the very transmitted signal? i hope u will respond me soon.

posted by David Richards on 2001-10-08 04:11

Hi - I am trying to revive a 27MHz walkie talkie board (from one of those cheap 6 transistor kiddies units) - i have got it to receive - but not to transmit - can someone send a cct showing where microphone should be connected? It has a tapped audio transformer to which the speaker is attached.

posted by max on 2001-10-02 08:06

Here you can find a simple crystal controlled transmitter. http://hem.passagen.se/communication/meny.html

posted by mohamad reza kabiry on 2001-09-26 13:13

Hi, please help me to disign a 27MHz transmitter & reciever with 100m range. I want to transmit & recieve digitaly symbols ( '0','1' ) and I don't know how can I do it. I wait for your reply. THANKS.

posted by blair on 2001-09-19 13:46

i need an inexpensive walkie-talkie schematic diagram for 5-6km range out of police frequency for my school's electronic exibition. thanks a bunch.

posted by dodo on 2001-09-19 13:42

could you please send me a walkie-talkie schematic diagram(including the component details) for 10km comunication which is not of police frequency that can be useful for students electronic projects. thanks a lot.

posted by kudu on 2001-09-19 13:37

Can somebody please send a whole circuit of a walkie talkie with a good range ( like more than 1 km out of police frequency-for students project )? I'll really appreciate that! Thanks

posted by yogesh on 2001-09-17 15:01

very usefull

posted by Roger on 2001-09-17 05:07

I need a whole circuit about walkie talkie , thanks a lot

posted by Jeffrey on 2001-09-12 04:51

Can somebody please send a whole circuit of a walkie talkie with a good range ( like more than 1 km)? I'll really appreciate that! Thanks

posted by pradeep sharma on 2001-09-06 18:06

I want whole circuit diagram about walkie talki circuit diagram with whole component and have good range. please inform me immediatly

posted by Edgar on 2001-09-06 09:37

Hello! I need a 27Mhz AM transmiter and a 27Mhz receiver, if you have something like this , please send it to me. Thanks!!!

posted by rafael on 2001-08-30 04:26

Please send me a walkie-talkie schematic diagram for any frecuency

posted by david h on 2001-08-29 01:25

hello. i need a electronics cad program to design my circuit.please help me.

posted by Geet Singh Chohan on 2001-08-23 13:43

A very exquisite piec of set.i was interested in a walkie talkie of arange of 8 kms but this one is even more powerful. do tell me that if i want to have 4 handheld sets then what adjustments have to be done. do write soon.

posted by mohan.s.meshram on 2001-08-16 16:18

want more communication projects

posted by itu on 2001-08-10 19:14

i am very keen on building a walikie talkie working on 27 mhz pls send me tranceiver9transmitter and receiver) circuit as soon as possible thanku sooo much itu

posted by nabin on 2001-07-29 19:44

Please send me a ckt diagram of a walkie talkie, via email. thanx

posted by nabin on 2001-07-29 19:37

I had a bet with one of my friends about making walkie. I hope this will guide me to complete my mission. Thanx

posted by swamymns@yahoo.com on 2001-07-28 13:23

vccxv

posted by mr.patrick kabo mogapi on 2001-07-05 13:23

i am very much impressed about the information i received about radio receivers from your website

posted by Ankur on 2001-06-30 11:08

Good work. Have Fun - always !!! Ankur

posted by mehdi ghavidel on 2001-05-27 11:33

please send me a walkie-talkie schematic diagram for 10km comunication.

posted by Adrianus Heriady L on 2001-03-28 04:28

Thanks, and good luck! YDL0G

posted by Marco on 2001-03-23 23:45

can you send me shematics for a transmitter-reciver or walkie-talkie to comunicate at the distance about 50m

posted by gharib abdul on 2001-02-26 21:59

any Heeeeeeeeelp can you know where can i find the full RF Modem link between two computers? thanks in advance Abdul

posted by basim bulos on 2000-11-19 05:24

i am interested in getting the board layout for the superregenerative receiver circuit shown. i understand you are having problems. if you can send the layout file to me, i perhaps can work on it and get it to work. thank you. basim bulos

posted by Gary Conners on 2000-11-09 16:01

Have you ever seen a superregenerative receiver that works at +3 volts? If so, please send me any information you have. Thanks.

posted by alex kwok on 2000-04-18 03:59

thanks your post this circuit in internet. i like it very much. Can u help me, i need a 27 mhz transmitter circuit. if u know, plsease send e mail to me. thanks

posted by Chris Fordyce on 1999-11-09 20:00

I have a design fo a one transistor reciever, using a MESFET. It is for my 3rd year communications design project, here a UWO Eng Sci. If you want it email me at cafordyc@julian.uwo.ca. Don't have it working yet..its due Dec 1, 99.

posted by jap on 1999-10-23 14:34

If you don't want to bother with building transmitters/recivers, check www.rfm.com RX TX parts.

posted by can ilica on 1999-10-20 08:22

Good Luck for your working. I need a one transistor transmitter and one transistor receiver . If you know , please help me.