"Sign Changer", "Scale Changer", "Phase Shift Circuits", "Voltage Follower", "V-to-I and I-to-V converters", "Op-Amp Adder and subtractor", "The Instrumentation Amplifier", "Advantages of the Instrumentation Amplifier", "The Integrator Amplifier", "The Differentiator Amplifier", "Logarithmic Amplifier", "Anti-Logarithmic Amplifier", "Op-amp Comparator", "Window Comparator", "The Voltage Comparator", "Rectifiers", "Peak Detector Circuit", "Clippers", "Clampers", "Active Filters", "Butterworth Filter Design", "Filter Design – Butterworth Low Pass", "Analog multiplier using an Emitter coupled Transistor pair", "Gilbert Multiplier cell", "Variable Transconductance Technique", "Operation of Basic Phase Locked Loop", "Waveform Generators", "555 Timer", "Introduction to Low Dropout (LDO) Linear Voltage Regulators", "What is aliasing?", "Audio power amplifier", "What is an Isolation Amplifier?" stringArrayList.add("Sign Changer"); stringArrayList.add("Scale Changer"); stringArrayList.add("Phase Shift Circuits"); stringArrayList.add("Voltage Follower"); stringArrayList.add("V-to-I and I-to-V converters"); stringArrayList.add("Op-Amp Adder and subtractor"); stringArrayList.add("The Instrumentation Amplifier"); stringArrayList.add("Advantages of the Instrumentation Amplifier"); stringArrayList.add("The Integrator Amplifier"); stringArrayList.add("The Differentiator Amplifier"); stringArrayList.add("Logarithmic Amplifier"); stringArrayList.add("Anti-Logarithmic Amplifier"); stringArrayList.add("Op-amp Comparator"); stringArrayList.add("Window Comparator"); stringArrayList.add("The Voltage Comparator"); stringArrayList.add("Rectifiers"); stringArrayList.add("Peak Detector Circuit"); stringArrayList.add("Clippers"); stringArrayList.add("Clampers"); stringArrayList.add("Active Filters"); stringArrayList.add("Butterworth Filter Design"); stringArrayList.add("Filter Design – Butterworth Low Pass"); stringArrayList.add("Analog multiplier using an Emitter coupled Transistor pair"); stringArrayList.add("Gilbert Multiplier cell"); stringArrayList.add("Variable Transconductance Technique"); stringArrayList.add("Operation of Basic Phase Locked Loop"); stringArrayList.add("Waveform Generators"); stringArrayList.add("555 Timer"); stringArrayList.add("Introduction to Low Dropout (LDO) Linear Voltage Regulators"); stringArrayList.add("What is aliasing?"); stringArrayList.add("Audio power amplifier"); stringArrayList.add("What is an Isolation Amplifier?"); if (selected.equals("Sign Changer")) { Intent i = new Intent(MainActivity.this, DetailActivity.class); i.putExtra("id", position); i.putExtra("url" , "file:///android_asset/1.htm" ); i.putExtra( "value", adapter.getItem(position)); startActivity(i); } if (selected.equals("Scale Changer")) { Intent i = new Intent(MainActivity.this, DetailActivity.class); i.putExtra("id", position); i.putExtra("url" , "file:///android_asset/2.htm" ); i.putExtra( "value", adapter.getItem(position)); startActivity(i); } if (selected.equals("Phase Shift Circuits")) { Intent i = new Intent(MainActivity.this, DetailActivity.class); i.putExtra("id", position); i.putExtra("url" , "file:///android_asset/3.htm" ); i.putExtra( "value", adapter.getItem(position)); startActivity(i); } if (selected.equals("Voltage Follower")) { Intent i = new Intent(MainActivity.this, DetailActivity.class); i.putExtra("id", position); i.putExtra("url" , "file:///android_asset/4.htm" ); i.putExtra( "value", adapter.getItem(position)); startActivity(i); } if (selected.equals("V-to-I and I-to-V converters")) { Intent i = new Intent(MainActivity.this, DetailActivity.class); i.putExtra("id", position); i.putExtra("url" , "file:///android_asset/5.htm" ); i.putExtra( "value", adapter.getItem(position)); startActivity(i); } if (selected.equals("Op-Amp Adder and subtractor")) { Intent i = new Intent(MainActivity.this, DetailActivity.class); i.putExtra("id", position); i.putExtra("url" , "file:///android_asset/6.htm" ); i.putExtra( "value", adapter.getItem(position)); startActivity(i); } if (selected.equals("The Instrumentation Amplifier")) { Intent i = new Intent(MainActivity.this, DetailActivity.class); i.putExtra("id", position); i.putExtra("url" , "file:///android_asset/7.htm" ); i.putExtra( "value", adapter.getItem(position)); startActivity(i); } if (selected.equals("Advantages of the Instrumentation Amplifier")) { Intent i = new Intent(MainActivity.this, DetailActivity.class); i.putExtra("id", position); i.putExtra("url" , "file:///android_asset/8.htm" ); i.putExtra( "value", adapter.getItem(position)); startActivity(i); } if (selected.equals("The Integrator Amplifier")) { Intent i = new Intent(MainActivity.this, DetailActivity.class); i.putExtra("id", position); i.putExtra("url" , "file:///android_asset/9.htm" ); i.putExtra( "value", adapter.getItem(position)); startActivity(i); } if (selected.equals("The Differentiator Amplifier")) { Intent i = new Intent(MainActivity.this, DetailActivity.class); i.putExtra("id", position); i.putExtra("url" , "file:///android_asset/10.htm" ); i.putExtra( "value", adapter.getItem(position)); startActivity(i); } if (selected.equals("Logarithmic Amplifier")) { Intent i = new Intent(MainActivity.this, DetailActivity.class); i.putExtra("id", position); i.putExtra("url" , "file:///android_asset/11.htm" ); i.putExtra( "value", adapter.getItem(position)); startActivity(i); } if (selected.equals("Anti-Logarithmic Amplifier")) { Intent i = new Intent(MainActivity.this, DetailActivity.class); i.putExtra("id", position); i.putExtra("url" , "file:///android_asset/12.htm" ); i.putExtra( "value", adapter.getItem(position)); startActivity(i); } if (selected.equals("Op-amp Comparator")) { Intent i = new Intent(MainActivity.this, DetailActivity.class); i.putExtra("id", position); i.putExtra("url" , "file:///android_asset/13.htm" ); i.putExtra( "value", adapter.getItem(position)); startActivity(i); } if (selected.equals("Window Comparator")) { Intent i = new Intent(MainActivity.this, DetailActivity.class); i.putExtra("id", position); i.putExtra("url" , "file:///android_asset/14.htm" ); i.putExtra( "value", adapter.getItem(position)); startActivity(i); } if (selected.equals("The Voltage Comparator")) { Intent i = new Intent(MainActivity.this, DetailActivity.class); i.putExtra("id", position); i.putExtra("url" , "file:///android_asset/15.htm" ); i.putExtra( "value", adapter.getItem(position)); startActivity(i); } if (selected.equals("Rectifiers")) { Intent i = new Intent(MainActivity.this, DetailActivity.class); i.putExtra("id", position); i.putExtra("url" , "file:///android_asset/16.htm" ); i.putExtra( "value", adapter.getItem(position)); startActivity(i); } if (selected.equals("Peak Detector Circuit")) { Intent i = new Intent(MainActivity.this, DetailActivity.class); i.putExtra("id", position); i.putExtra("url" , "file:///android_asset/17.htm" ); i.putExtra( "value", adapter.getItem(position)); startActivity(i); } if (selected.equals("Clippers")) { Intent i = new Intent(MainActivity.this, DetailActivity.class); i.putExtra("id", position); i.putExtra("url" , "file:///android_asset/18.htm" ); i.putExtra( "value", adapter.getItem(position)); startActivity(i); } if (selected.equals("Clampers")) { Intent i = new Intent(MainActivity.this, DetailActivity.class); i.putExtra("id", position); i.putExtra("url" , "file:///android_asset/19.htm" ); i.putExtra( "value", adapter.getItem(position)); startActivity(i); } if (selected.equals("Active Filters")) { Intent i = new Intent(MainActivity.this, DetailActivity.class); i.putExtra("id", position); i.putExtra("url" , "file:///android_asset/20.htm" ); i.putExtra( "value", adapter.getItem(position)); startActivity(i); } if (selected.equals("Butterworth Filter Design")) { Intent i = new Intent(MainActivity.this, DetailActivity.class); i.putExtra("id", position); i.putExtra("url" , "file:///android_asset/21.htm" ); i.putExtra( "value", adapter.getItem(position)); startActivity(i); } if (selected.equals("Filter Design – Butterworth Low Pass")) { Intent i = new Intent(MainActivity.this, DetailActivity.class); i.putExtra("id", position); i.putExtra("url" , "file:///android_asset/22.htm" ); i.putExtra( "value", adapter.getItem(position)); startActivity(i); } if (selected.equals("Analog multiplier using an Emitter coupled Transistor pair")) { Intent i = new Intent(MainActivity.this, DetailActivity.class); i.putExtra("id", position); i.putExtra("url" , "file:///android_asset/23.htm" ); i.putExtra( "value", adapter.getItem(position)); startActivity(i); } if (selected.equals("Gilbert Multiplier cell")) { Intent i = new Intent(MainActivity.this, DetailActivity.class); i.putExtra("id", position); i.putExtra("url" , "file:///android_asset/24.htm" ); i.putExtra( "value", adapter.getItem(position)); startActivity(i); } if (selected.equals("Variable Transconductance Technique")) { Intent i = new Intent(MainActivity.this, DetailActivity.class); i.putExtra("id", position); i.putExtra("url" , "file:///android_asset/25.htm" ); i.putExtra( "value", adapter.getItem(position)); startActivity(i); } if (selected.equals("Operation of Basic Phase Locked Loop")) { Intent i = new Intent(MainActivity.this, DetailActivity.class); i.putExtra("id", position); i.putExtra("url" , "file:///android_asset/26.htm" ); i.putExtra( "value", adapter.getItem(position)); startActivity(i); } if (selected.equals("Waveform Generators")) { Intent i = new Intent(MainActivity.this, DetailActivity.class); i.putExtra("id", position); i.putExtra("url" , "file:///android_asset/27.htm" ); i.putExtra( "value", adapter.getItem(position)); startActivity(i); } if (selected.equals("555 Timer")) { Intent i = new Intent(MainActivity.this, DetailActivity.class); i.putExtra("id", position); i.putExtra("url" , "file:///android_asset/28.htm" ); i.putExtra( "value", adapter.getItem(position)); startActivity(i); } if (selected.equals("Introduction to Low Dropout (LDO) Linear Voltage Regulators")) { Intent i = new Intent(MainActivity.this, DetailActivity.class); i.putExtra("id", position); i.putExtra("url" , "file:///android_asset/29.htm" ); i.putExtra( "value", adapter.getItem(position)); startActivity(i); } if (selected.equals("What is aliasing?")) { Intent i = new Intent(MainActivity.this, DetailActivity.class); i.putExtra("id", position); i.putExtra("url" , "file:///android_asset/30.htm" ); i.putExtra( "value", adapter.getItem(position)); startActivity(i); } if (selected.equals("Audio power amplifier")) { Intent i = new Intent(MainActivity.this, DetailActivity.class); i.putExtra("id", position); i.putExtra("url" , "file:///android_asset/31.htm" ); i.putExtra( "value", adapter.getItem(position)); startActivity(i); } if (selected.equals("What is an Isolation Amplifier?")) { Intent i = new Intent(MainActivity.this, DetailActivity.class); i.putExtra("id", position); i.putExtra("url" , "file:///android_asset/32.htm" ); i.putExtra( "value", adapter.getItem(position)); startActivity(i); }