Current dividers using emitter-coupled transistor pairs

A current divider comprising:

• a first terminal for conducting the current to be divided;
• second and third terminals for conducting respective portions of the divided current;
• first and second transistors of a first conductivity type having respective emitter electrodes connected to said first terminal, having respective collector electrodes connected to said second terminal and to said third terminal, and having respective base electrodes;
• a first resistance;
• first and second semiconductor diode means, said first diode means exhibiting a smaller offset voltage thereacross for given flow of current therethrough than said second diode means, said first diode means and said first resistance being in a first series connection, said second diode means in parallel connection with said first series connection;
• means for applying a bias current to said parallel connection for forward biasing said first and second diode means;
• and
• means for applying voltage between the base electrodes of said first and second transistors that is directly related to the resulting voltage appearing across said first resistance.