http://www.changpuak.ch/electronics/index.php News from the Electronics Lab of Changpuak en-uk Alexander C. Frank Mon, 01 Aug 2011 12:24:19 GMT Yet another Notch Filter Designer http://www.changpuak.ch/electronics/Bainter_Notch_Filter.php pi@changpuak.ch (Alexander C. Frank) http://www.changpuak.ch/electronics/Bainter_Notch_Filter.php Wed, 15 May 2013 21:32:59 GMT A Tool, designed for the Cavity-Team :-) http://www.changpuak.ch/electronics/Active_Notch_Filter.php pi@changpuak.ch (Alexander C. Frank) http://www.changpuak.ch/electronics/Active_Notch_Filter.php Thu, 09 May 2013 00:29:59 GMT A handy 'ADD-ON' to hack together a VNA :-) http://www.changpuak.ch/electronics/Gain_Phase_Adapter.php pi@changpuak.ch (Alexander C. Frank) http://www.changpuak.ch/electronics/Gain_Phase_Adapter.php Wed, 10 Apr 2013 20:59:59 GMT (Emitter Feedback Bias Network) http://www.changpuak.ch/electronics/BJT_Buffer_Amplifier_4.php pi@changpuak.ch (Alexander C. Frank) http://www.changpuak.ch/electronics/BJT_Buffer_Amplifier_4.php Tue, 12 Mar 2013 18:59:59 GMT (Voltage Feedback Bias Network) http://www.changpuak.ch/electronics/BJT_Buffer_Amplifier_3.php pi@changpuak.ch (Alexander C. Frank) http://www.changpuak.ch/electronics/BJT_Buffer_Amplifier_3.php Tue, 11 Mar 2013 22:19:59 GMT ... is now equipped with dBi/dBd and km/mi selection. http://www.changpuak.ch/electronics/pathloss_rssi.php pi@changpuak.ch (Alexander C. Frank) http://www.changpuak.ch/electronics/pathloss_rssi.php Fri, 08 Mar 2013 18:59:59 GMT A handy tool to measure RF power http://www.changpuak.ch/electronics/Logarithmic_Amplifier_AD8307.php pi@changpuak.ch (Alexander C. Frank) http://www.changpuak.ch/electronics/Logarithmic_Amplifier_AD8307.php Fri, 25 Jan 2013 19:29:59 GMT Troubleshooting the RS232 port of the UT 803 Multimeter http://www.changpuak.ch/electronics/trouble_ut803_serial.php pi@changpuak.ch (Alexander C. Frank) http://www.changpuak.ch/electronics/trouble_ut803_serial.php Tue, 12 Dec 2012 00:59:59 GMT Yet another Power Supply based on the LM 723 http://www.changpuak.ch/electronics/peth_9910.php pi@changpuak.ch (Alexander C. Frank) http://www.changpuak.ch/electronics/peth_9910.php Thu, 04 Oct 2012 19:45:59 GMT Unity Gain in the Passband, 24 dB / Octave, 2 x 2nd order http://www.changpuak.ch/electronics/Butterworth_Highpass_active_24dB.php pi@changpuak.ch (Alexander C. Frank) http://www.changpuak.ch/electronics/Butterworth_Highpass_active_24dB.php Mon, 17 Sep 2012 20:53:59 GMT Unity Gain in the Passband, 24 dB / Octave, 2 x 2nd order http://www.changpuak.ch/electronics/Butterworth_Lowpass_active_24dB.php pi@changpuak.ch (Alexander C. Frank) http://www.changpuak.ch/electronics/Butterworth_Lowpass_active_24dB.php Mon, 17 Sep 2012 20:53:59 GMT Unity Gain in the Passband, 24 dB / Octave, 2 x 2nd order http://www.changpuak.ch/electronics/Linkwitz_Lowpass_active_24dB.php pi@changpuak.ch (Alexander C. Frank) http://www.changpuak.ch/electronics/Linkwitz_Lowpass_active_24dB.php Wed, 21 Aug 2012 23:56:59 GMT Unity Gain in the Passband, 24 dB / Octave, 2 x 2nd order http://www.changpuak.ch/electronics/Linkwitz_Highpass_active_24dB.php pi@changpuak.ch (Alexander C. Frank) http://www.changpuak.ch/electronics/Linkwitz_Highpass_active_24dB.php Wed, 21 Aug 2012 23:45:59 GMT Unity Gain in the Passband, 24 dB / Octave, 2 x 2nd order http://www.changpuak.ch/electronics/Bessel_Lowpass_active_24dB.php pi@changpuak.ch (Alexander C. Frank) http://www.changpuak.ch/electronics/Bessel_Lowpass_active_24dB.php Wed, 21 Aug 2012 23:29:19 GMT Unity Gain in the Passband, 24 dB / Octave, 2 x 2nd order http://www.changpuak.ch/electronics/Bessel_Highpass_active_24dB.php pi@changpuak.ch (Alexander C. Frank) http://www.changpuak.ch/electronics/Bessel_Highpass_active_24dB.php Wed, 21 Aug 2012 23:00:19 GMT Unity Gain in the Passband, 12 dB / Octave, 2 x 2nd order http://www.changpuak.ch/electronics/Bessel_High_Lowpass_active_12dB.php pi@changpuak.ch (Alexander C. Frank) http://www.changpuak.ch/electronics/Bessel_High_Lowpass_active_12dB.php Fri, 17 Aug 2012 21:01:19 GMT 3 ... 540 MHz, 1.5 W Power Amplifier using the BGD 804 http://www.changpuak.ch/electronics/Broadband_VHF_Power_Amplifier.php pi@changpuak.ch (Alexander C. Frank) http://www.changpuak.ch/electronics/Broadband_VHF_Power_Amplifier.php Sun, 05 Aug 2012 21:19:49 GMT Basics http://www.changpuak.ch/electronics/Noise.php pi@changpuak.ch (Alexander C. Frank) http://www.changpuak.ch/electronics/Noise.php Thu, 28 Jun 2012 21:19:49 GMT Quickly calculate the Component values for a Constant - K Bandpass Filter http://www.changpuak.ch/electronics/Const_k_Bandpass.php pi@changpuak.ch (Alexander C. Frank) http://www.changpuak.ch/electronics/Const_k_Bandpass.php Fri, 30 Mar 2012 19:09:39 GMT Quickly calculate the Component values for a Constant - K Lowpass Filter http://www.changpuak.ch/electronics/calc_07.php pi@changpuak.ch (Alexander C. Frank) http://www.changpuak.ch/electronics/calc_07.php Fri, 23 Mar 2012 19:09:39 GMT Quickly calculate the Component values for a Constant - K Highpass Filter http://www.changpuak.ch/electronics/Const_k_Highpass.php pi@changpuak.ch (Alexander C. Frank) http://www.changpuak.ch/electronics/Const_k_Highpass.php Fri, 23 Mar 2012 19:09:39 GMT Now equipped with Voting / Comment Function http://www.changpuak.ch/electronics/amidon_toroid_calculator_2.php pi@changpuak.ch (Alexander C. Frank) http://www.changpuak.ch/electronics/amidon_toroid_calculator_2.php Mon, 08 Nov 2011 23:09:39 GMT Now equipped with Voting / Comment Function http://www.changpuak.ch/electronics/amidon_toroid_calculator.php pi@changpuak.ch (Alexander C. Frank) http://www.changpuak.ch/electronics/amidon_toroid_calculator.php Mon, 08 Nov 2011 23:09:39 GMT Now equipped with Voting / Comment Function (still not complete) http://www.changpuak.ch/electronics/airband_receiver.php pi@changpuak.ch (Alexander C. Frank) http://www.changpuak.ch/electronics/airband_receiver.php Mon, 08 Nov 2011 23:09:39 GMT Now equipped with Voting / Comment Function http://www.changpuak.ch/electronics/AD9851.php pi@changpuak.ch (Alexander C. Frank) http://www.changpuak.ch/electronics/AD9851.php Mon, 08 Nov 2011 23:09:39 GMT (On public demand) http://www.changpuak.ch/electronics/index.php pi@changpuak.ch (Alexander C. Frank) http://www.changpuak.ch/electronics/index.php Mon, 07 Nov 2011 23:09:39 GMT